Morophon Slivers

All Slivers have "{2}, Sacrifice this permanent: This permanent deals 2 damage to any target."

As an additional cost to cast this spell, sacrifice a creature.

Search your library for a creature card, reveal it, put it into your hand, then shuffle.

{T}: Add one mana of any color in your commander's color identity.

{1}, {T}: Add {W}{U}.

Basalt Monolith doesn't untap during your untap step.

{T}: Add {C}{C}{C}.

{3}: Untap Basalt Monolith.

({T}: Add {B} or {G}.)

({G/P} can be paid with either {G} or 2 life.)

{1}{G/P}, {T}, Sacrifice a creature: Search your library for a creature card with mana value equal to 1 plus the sacrificed creature's mana value, put that card onto the battlefield, then shuffle. Activate only as a sorcery.

({T}: Add {B} or {R}.)

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Destroy target creature that isn't enchanted. It can't be regenerated.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

({T}: Add {G} or {U}.)

As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

All Slivers have "{1}, Sacrifice this permanent: This permanent deals 1 damage to any target."

All Slivers have "{1}, Sacrifice this permanent: Prevent the next 1 damage that would be dealt to target player, planeswalker, or Sliver creature this turn."

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

Imprint — When Chrome Mox enters the battlefield, you may exile a nonartifact, nonland card from your hand.

{T}: Add one mana of any of the exiled card's colors.

Sliver creatures you control have flying and haste.

Search your library for up to three creature cards, reveal them, then shuffle and put those cards on top in any order.

Sliver creatures you control have "When this creature enters the battlefield, you may exile target creature an opponent controls until this creature leaves the battlefield."

All Slivers have "{T}: Regenerate target Sliver."

All Slivers have shroud. (They can't be the targets of spells or abilities.)

All Slivers have "Sacrifice this permanent: You gain 3 life."

As an additional cost to cast this spell, sacrifice a creature.

Search your library for a card, put that card into your hand, then shuffle.

{1}, {T}: Add {U}{B}.

All Sliver creatures have defender.

All Slivers have "When this permanent enters the battlefield, draw a card."

Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

As an additional cost to cast this spell, sacrifice a creature.

Search your library for a creature card with mana value X or less, where X is 2 plus the sacrificed creature's mana value. Put that card onto the battlefield, then shuffle. Exile Eldritch Evolution.

Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.

{G}, {T}, Discard a creature card: Search your library for a creature card, reveal it, put it into your hand, then shuffle.

Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast.

Sliver creatures you control have flying.

All Slivers have "{T}: Add one mana of any color."

All Slivers are colorless.

({T}: Add {W} or {B}.)

As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

{1}, {T}: Add {B}{G}.

{1}, {T}: Add {R}{G}.

({T}: Add {W} or {U}.)

As Hallowed Fountain enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

All Slivers have "When this permanent enters the battlefield, destroy target artifact or enchantment."

All Sliver creatures have haste.

All Slivers have "Pay 2 life: Return this permanent to its owner's hand."

Hickory Woodlot enters the battlefield tapped with two depletion counters on it.

{T}, Remove a depletion counter from Hickory Woodlot: Add {G}{G}. If there are no depletion counters on Hickory Woodlot, sacrifice it.

Each Sliver card in each player's hand has slivercycling {3}.

Slivercycling {3} ({3}, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)

{1}, {T}: Add {U}{R}.

Search your library for up to two creature cards and reveal them. Put one into your hand and the other into your graveyard. Then shuffle.

Flying

You may pay {W}{U}{B}{R}{G} rather than pay the mana cost for spells that you cast.

Sliver creatures you control have "When this creature enters the battlefield, it deals 1 damage to target player or planeswalker and you gain 1 life."

Suspend 3—{0} (Rather than cast this card from your hand, pay {0} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)

{T}, Sacrifice Lotus Bloom: Add three mana of any one color.

{T}, Sacrifice Lotus Petal: Add one mana of any color.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

{T}: Add {C}{C}.

Mana Vault doesn't untap during your untap step.

At the beginning of your upkeep, you may pay {4}. If you do, untap Mana Vault.

At the beginning of your draw step, if Mana Vault is tapped, it deals 1 damage to you.

{T}: Add {C}{C}{C}.

Sliver creatures you control have "{T}: Add one mana of any color."

All Slivers have "{1}, Sacrifice this permanent: Each player discards a card."

{T}: Add {C}{C}{C}. Spend this mana only to cast artifact spells.

Changeling (This card is every creature type.)

As Morophon, the Boundless enters the battlefield, choose a creature type.

Spells of the chosen type you cast cost {W}{U}{B}{R}{G} less to cast. This effect reduces only the amount of colored mana you pay.

Other creatures you control of the chosen type get +1/+1.

If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard.

{T}: Add one mana of any color.

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.

As an additional cost to cast this spell, sacrifice a green creature.

Search your library for a green creature card, put it onto the battlefield, then shuffle.

All Slivers have "{3}, Sacrifice this permanent: Destroy target permanent."

Take an extra turn after this one.

If Nexus of Fate would be put into a graveyard from anywhere, reveal Nexus of Fate and shuffle it into its owner's library instead.

({T}: Add {B} or {G}.)

As Overgrown Tomb enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Peat Bog enters the battlefield tapped with two depletion counters on it.

{T}, Remove a depletion counter from Peat Bog: Add {B}{B}. If there are no depletion counters on Peat Bog, sacrifice it.

All Sliver creatures get +0/+1.

All Sliver creatures have flying.

All Slivers have "If this permanent would be put into a graveyard, you may put it on top of its owner's library instead."

Flash

Any player may cast Sliver spells as though they had flash.

Remote Farm enters the battlefield tapped with two depletion counters on it.

{T}, Remove a depletion counter from Remote Farm: Add {W}{W}. If there are no depletion counters on Remote Farm, sacrifice it.

Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy.

This spell can't be countered.

Sliver spells can't be countered.

({T}: Add {R} or {W}.)

As Sacred Foundry enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Sandstone Needle enters the battlefield tapped with two depletion counters on it.

{T}, Remove a depletion counter from Sandstone Needle: Add {R}{R}. If there are no depletion counters on Sandstone Needle, sacrifice it.

Saprazzan Skerry enters the battlefield tapped with two depletion counters on it.

{T}, Remove a depletion counter from Saprazzan Skerry: Add {U}{U}. If there are no depletion counters on Saprazzan Skerry, sacrifice it.

({T}: Add {G} or {W}.)

All Slivers have "{T}: Target player mills a card."

{1}, {T}: Add {G}{W}.

{1}: Look at the top three cards of your library, then put them back in any order.

{T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

Slivers can't be blocked except by Slivers.

All Sliver creatures have flanking. (Whenever a creature without flanking blocks a Sliver, the blocking creature gets -1/-1 until end of turn.)

{1}, {T}: Add {G}{U}.

Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.)

All Sliver creatures get +1/+1 for each other Sliver on the battlefield.

{3}: Search your library for a Sliver card, reveal that card, put it into your hand, then shuffle.

{3}: Gain control of target Sliver. (This effect lasts indefinitely.)

{2}: Create a 1/1 colorless Sliver creature token.

{T}: Add {C}{C}.

Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.

({T}: Add {U} or {R}.)

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {R} or {G}.)

As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Sliver creatures you control have first strike. (They deal combat damage before creatures without first strike.)

({T}: Add {R} or {G}.)

({T}: Add {G} or {W}.)

As Temple Garden enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

[+1]: Untap up to two target artifacts.

[−X]: Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.

[−5]: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn.

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom of your library in a random order.)

Sliver spells you cast have cascade.

{T}: Add {C}{C}{C}.

When Trophy Mage enters the battlefield, you may search your library for an artifact card with mana value 3, reveal it, put it into your hand, then shuffle.

({T}: Add {G} or {U}.)

({T}: Add {W} or {U}.)

({T}: Add {U} or {B}.)

All Slivers have "{2}, Sacrifice this permanent: You gain 4 life."

All Sliver creatures have poisonous 1. (Whenever a Sliver deals combat damage to a player, that player gets a poison counter. A player with ten or more poison counters loses the game.)

({T}: Add {U} or {R}.)

({T}: Add {U} or {B}.)

As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Worn Powerstone enters the battlefield tapped.

{T}: Add {C}{C}.