Ertai counter

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

Counter target spell.

Counter target artifact or enchantment spell.

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

{1}, {T}: Draw a card, then exile a card from your hand. If cards with five or more different converted mana costs are exiled with Azor's Gateway, you gain 5 life, untap Azor's Gateway, and transform it.

{2}{U}, {T}: Reveal any number of blue cards in your hand. Counter target spell unless its controller pays {1} for each card revealed this way.

Counter target spell.

Counter target colorless spell.

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.

Counter target spell unless its controller pays {X}. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Counter target spell.

Sacrifice Cursecatcher: Counter target instant or sorcery spell unless its controller pays {1}.

{T}, Sacrifice Daring Apprentice: Counter target spell.

{U}, {T}, Discard a card: Counter target spell or ability that targets a creature.

{1}, Exile an instant or sorcery card from your graveyard: Choose one —

• Counter target noncreature spell unless its controller pays {2}.

• Disciple of the Ring gets +1/+1 until end of turn.

• Tap target creature.

• Untap target creature.

{T}: Counter target spell unless its controller pays {1}.

Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

{T}: Counter target spell unless its controller pays {1}.

Level up {1}{U} ({1}{U}: Put a level counter on this. Level up only as a sorcery.)

LEVEL 2-3

2/4

{U}{U}, {T}: Copy target instant or sorcery spell. You may choose new targets for the copy.

LEVEL 4+

2/5

{U}{U}, {T}: Copy target instant or sorcery spell twice. You may choose new targets for the copies.

{2}{U}{U}, {T}: Counter target spell.

{T}: Add one mana of any color that a land an opponent controls could produce.

Counter target instant or sorcery spell unless its controller pays {1}.

Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost.

Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.

Counter target spell.

Counter target spell unless its controller pays {1}.

{3}{U}, {T}: Counter target spell unless its controller pays {2}.

Channel — {3}{U}, Discard Ghost-Lit Warder: Counter target spell unless its controller pays {4}.

{T}: Add three mana of any one color.

Flying

{U}, Sacrifice Glen Elendra Archmage: Counter target noncreature spell.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

{2}{U}, Discard a card: Counter target spell if it has the same converted mana cost as the discarded card.

Flying

Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."

When you cast this spell, if you have fewer than seven cards in hand, draw cards equal to the difference.

Menace

Discard a card with converted mana cost X: Counter target spell with converted mana cost X.

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.

Whenever a spell or ability you control counters a spell, you may create a 1/1 blue Merfolk creature token.

Tap seven untapped Merfolk you control: Counter target spell.

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}.

Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's converted mana cost.

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}.

{2}, Reveal X blue cards from your hand, Sacrifice Martyr of Frost: Counter target spell unless its controller pays {X}.

Flying

Whenever another Spirit enters the battlefield under your control, Mausoleum Wanderer gets +1/+1 until end of turn.

Sacrifice Mausoleum Wanderer: Counter target instant or sorcery spell unless its controller pays {X}, where X is Mausoleum Wanderer's power.

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

Counter target spell with converted mana cost 1.

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.

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 this ability only if you control three or more artifacts.

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}: Add one mana of any color.

Counter target spell if no mana was spent to cast it.

Counter target spell.

At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.

Tap an untapped Wizard you control: Counter target spell unless its controller pays {1}.

(Seat of the Synod isn't a spell.)

{T}: Add {U}.

Flash (You may cast this spell any time you could cast an instant.)

Flying

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Silumgar Sorcerer exploits a creature, counter target creature spell.

Flying

{U}, Sacrifice Siren Stormtamer: Counter target spell or ability that targets you or a creature you control.

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

Flying

{3}, Return a land you control to its owner's hand: Counter target spell unless its controller pays {3}.

Counter target noncreature spell unless its controller pays {2}.

Flying

Sacrifice Spiketail Drake: Counter target spell unless its controller pays {3}.

Flying

Sacrifice Spiketail Drakeling: Counter target spell unless its controller pays {2}.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Sacrifice Spiketail Hatchling: Counter target spell unless its controller pays {1}.

Choose one —

• Counter target artifact spell.

• Return target artifact to its owner's hand.

{U}{U}, {T}, Discard a card: Counter target creature spell.

{U}{U}, {T}, Discard a card: Counter target noncreature spell.

Counter target noncreature spell unless its controller pays {1}.

Ferocious — If you control a creature with power 4 or greater, counter that spell instead.

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

{U}, {T}: Counter target spell unless its controller pays {1}.

Flash (You may cast this spell any time you could cast an instant.)

When Voidmage Husher enters the battlefield, counter target activated ability. (Mana abilities can't be targeted.)

Whenever you cast a spell, you may return Voidmage Husher to its owner's hand.

{U}{U}, Sacrifice a Wizard: Counter target spell.

Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Flying

{U}, Sacrifice Wizard Replica: Counter target spell unless its controller pays {2}.

Worn Powerstone enters the battlefield tapped.

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