hollow one

Blackcleave Cliffs enters the battlefield tapped unless you control two or fewer other lands.

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

({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.

Bloodghast can't block.

Bloodghast has haste as long as an opponent has 10 or less life.

Landfall — Whenever a land enters the battlefield under your control, you may return Bloodghast from your graveyard to the battlefield.

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

Each player draws three cards, then discards three cards at random.

Escalate—Discard a card. (Pay this cost for each mode chosen beyond the first.)

Choose one or more —

• Target opponent reveals their hand. You choose an instant or sorcery card from it. That player discards that card.

• Target creature gets -2/-2 until end of turn.

• Target opponent loses 2 life and you gain 2 life.

Draw two cards, then discard two cards.

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target creature if it has mana value 2 or less.

Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent you controlled left the battlefield this turn.

Menace

Whenever you cycle or discard a card, Flameblade Adept gets +1/+0 until end of turn.

Flying, haste

Flamewake Phoenix attacks each combat if able.

Ferocious — At the beginning of combat on your turn, if you control a creature with power 4 or greater, you may pay {R}. If you do, return Flamewake Phoenix from your graveyard to the battlefield.

Draw four cards, then discard three cards at random.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

This spell costs {2} less to cast for each card you've cycled or discarded this turn.

Cycling {2} ({2}, Discard this card: Draw a card.)

Lightning Bolt deals 3 damage to any target.

({T}: Add {R}.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Cycling—Pay 2 life. (Pay 2 life, Discard this card: Draw a card.)

({T}: Add {B}.)

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

{2}{G/U}{G/U}: Mill two cards, then return a nonland card of an opponent's choice from your graveyard to your hand.

Target player reveals their hand. You choose a nonland card from it. That player discards that card. You lose 2 life.