When this creature enters, sacrifice a creature.

{1}{B}, {T}: Target player loses 1 life.

Flying {2}{U}, Discard two cards: Return this card from your graveyard to the battlefield tapped.

Defender Whenever you cast an instant or sorcery spell, you may draw a card. If you do, discard a card. This ability triggers only once each turn.

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

Sacrifice this creature: Draw a card.

Sacrifice this creature: Draw a card.

Search the Room — {5}{U}: Roll a d20. 1—9 | Draw a card. 10—20 | Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Enchant creature When enchanted creature dies, that creature's controller loses life equal to its toughness.

Target creature gets +1/+1 and gains your choice of deathtouch or lifelink until end of turn. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it. Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

Target creature gets +1/+1 and gains your choice of deathtouch or lifelink until end of turn. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it. Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control."

Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control."

Enchant creature Enchanted creature has flying. Threshold — Enchanted creature has shroud as long as seven or more cards are in your graveyard. (It can't be the target of spells or abilities.)

Choose one or both — • Return target creature card from your graveyard to your hand. • Return target planeswalker card from your graveyard to your hand.

You may mill two cards. Then return up to two creature cards from your graveyard to your hand. (To mill two cards, put the top two cards of your library into your graveyard.)

When this creature enters, return target artifact card from your graveyard to your hand.

Return target artifact card from your graveyard to the battlefield.

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

When this creature dies, each player sacrifices a creature of their choice.

When this creature enters, return target creature to its owner's hand.

Return up to X target creatures to their owners' hands, where X is one plus the number of cards named Aether Burst in all graveyards as you cast this spell.

As an additional cost to cast this spell, pay {4} or sacrifice an artifact or creature. Destroy target creature or planeswalker.

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

Destroy target nonlegendary creature.

Destroy target nonlegendary creature.

Enchant creature When this Aura is put into a graveyard from the battlefield, destroy target nonblack creature.

Enchant creature When a creature dies, destroy enchanted creature.