, Sacrifice this creature: Create a 3/3 green Centaur creature token.

Target creature you control gains protection from the color of your choice until end of turn.
Rebound

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
When you unlock this door, search your library for a Room card that doesn't have the same name as a Room you control, reveal it, put it into your hand, then shuffle.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
At the beginning of your upkeep, surveil 1. You win the game if there are eight or more different names among unlocked doors of Rooms you control.

Visit — Each player draws a card from the library of the player to their right. You create three Treasure tokens.

Whenever this creature becomes the target of a spell or ability, mill two cards.

: Target player draws two cards, then discards two cards.

: Add . This land deals 1 damage to you.
Threshold — , , Sacrifice this land: Target player draws three cards, then discards three cards. Activate only if there are seven or more cards in your graveyard.

Whenever this creature deals combat damage to a player, return up to that many target permanents that player controls to their owner's hand.

This creature can't be blocked.
At the beginning of combat on your turn, you may have this creature become a copy of another target creature until end of turn, except it's 1/4 and has "This creature can't be blocked."

Whenever this creature becomes the target of a spell or ability, mill three cards.
, : Prevent all combat damage that would be dealt to and dealt by target creature you control this turn.

When this creature enters, surveil 3.
Threshold — This creature can't be blocked as long as there are seven or more cards in your graveyard.

Discard a card: This creature gains shroud until end of turn and can't be blocked this turn.

: Target player draws a card, then discards a card.

This creature can't be blocked.
, Sacrifice this creature: Target creature can't be blocked this turn.

: Tap target creature without flying.

Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature enters, draw three cards, then discard two cards."

Flying
, Sacrifice a land: Draw a card.

Whenever a player casts a spell, counter that spell unless that player pays , where X is the number of cards in all graveyards with the same name as the spell.

Sacrifice this creature: Target creature loses protection from black until end of turn.

At the beginning of your upkeep, put a shred counter on this creature. Then mill a card for each shred counter on this creature.

Choose one —
• Target opponent discards two cards.
• Target opponent reveals their hand. You choose a nonland card from it. That player discards that card.

Surveil X, where X is the number of artifacts you control. Then draw three cards.

Target opponent reveals the top card of their library. Cerebral Eruption deals damage equal to the revealed card's mana value to that player and each creature that player controls. If a land card is revealed this way, return Cerebral Eruption to its owner's hand.

Target player draws two cards, then Cerebral Vortex deals damage to that player equal to the number of cards they've drawn this turn.

Equipped creature gets +2/+1 and has trample.
Equip Citizen
Equip

When this creature attacks or blocks, destroy it at end of combat.

Equipped creature gets +1/+0 and has "Whenever this creature deals combat damage, create a Blood token."
Equip

Counter target colorless spell.

First strike, lifelink
At the beginning of your postcombat main phase, if you gained life this turn, seek a card with the highest mana value among cards in your library with mana value less than or equal to the amount of life you gained this turn.