At the beginning of your upkeep, look at the top card of your library. You may reveal that card. If an instant or sorcery card is revealed this way, transform Delver of Secrets.

, , Sacrifice a blue creature, a black creature, and a red creature: Search your library for a card named Prince of Thralls, put it onto the battlefield, then shuffle.

: Destroy target Aura attached to a creature.

, Sacrifice Diligent Farmhand: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

If Diligent Farmhand is in a graveyard, effects from spells named Muscle Burst count it as a card named Muscle Burst.

Diregraf Ghoul enters the battlefield tapped.

Outlast (, : Put a +1/+1 counter on this creature. Outlast only as a sorcery.)

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

Whenever Dragonfly Pilot enters the battlefield, conjure a card named Dragonfly Suit into your hand.

Dragonfly Pilot crews Vehicles as though its power were 2 greater.

Defender, first strike

Whenever you cast a noncreature spell, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)

Delirium — As long as there are four or more card types among cards in your graveyard, Dragon's Rage Channeler gets +2/+2, has flying, and attacks each combat if able.

Dread Wanderer enters the battlefield tapped.

: Return Dread Wanderer from your graveyard to the battlefield. Activate only as a sorcery and only if you have one or fewer cards in hand.

: Dreadwing gets +3/+0 and gains flying until end of turn.

Shadow (This creature can block or be blocked by only creatures with shadow.)

At the beginning of your upkeep, sacrifice Drifter il-Dal unless you pay .

, : Tap target creature without flying.

Whenever a player casts a blue spell, you may pay . If you do, target player mills two cards.

If an instant or sorcery card would be put into a graveyard from anywhere, exile it instead.

Sacrifice Duergar Assailant: It deals 1 damage to target attacking or blocking creature.

Flying

, : Target attacking Vampire gets +1/+1 until end of turn.

Boast — : Target opponent loses 1 life and you gain 1 life. (Activate only if this creature attacked this turn and only once each turn.)

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

: Regenerate Duty-Bound Dead. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

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

Sacrifice Dwarven Scorcher: Dwarven Scorcher deals 1 damage to target creature unless that creature's controller has Dwarven Scorcher deal 2 damage to them.

Whenever you cast a creature spell that has an Adventure, draw a card. (It doesn't need to have gone on the adventure first.)

When Electric Eel enters the battlefield, it deals 1 damage to you.

: Electric Eel gets +2/+0 until end of turn and deals 1 damage to you.

: Add . Elves of Deep Shadow deals 1 damage to you.

Sacrifice Elvish Eulogist: You gain 1 life for each Elf card in your graveyard.

: Target creature gains trample until end of turn.

Shroud (This creature can't be the target of spells or abilities.)

: Add .

Elvish Reclaimer gets +2/+2 as long as there are three or more land cards in your graveyard.

, , Sacrifice a land: Search your library for a land card, put it onto the battlefield tapped, then shuffle.

, , Sacrifice Elvish Scrapper: Destroy target artifact.

, , Sacrifice Embodiment of Spring: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

First strike

, , Sacrifice Encampment Keeper: Creatures you control get +2/+2 until end of turn.

Backup 1 (When this creature enters the battlefield, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

When this creature dies, put its counters on target creature you control.

At the beginning of your upkeep, you may exile a creature card from a graveyard. If you do, put a +1/+1 counter on Entrails Feaster. If you don't, tap Entrails Feaster.

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays , where X is Esper Sentinel's power.

Whenever another creature enters the battlefield, you gain 1 life.

: Evolved Sleeper becomes a Human Cleric with base power and toughness 2/2.

: If Evolved Sleeper is a Cleric, put a deathtouch counter on it and it becomes a Phyrexian Human Cleric with base power and toughness 3/3.

: If Evolved Sleeper is a Phyrexian, put a +1/+1 counter on it, then you draw a card and you lose 1 life.

Defender

, : Mill a card. (Put the top card of your library into your graveyard.)

, Exile Expendable Lackey from your graveyard: Create a 1/1 blue Fish creature token with "This creature can't be blocked." Activate only as a sorcery.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Remove two +1/+1 counters from Experiment One: Regenerate Experiment One. (The next time this creature would be destroyed, instead tap it, remove it from combat, and heal all damage on it.)

Trample

Exuberant Fuseling gets +1/+0 for each oil counter on it.

When Exuberant Fuseling enters the battlefield and whenever another creature or artifact you control is put into a graveyard from the battlefield, put an oil counter on Exuberant Fuseling.

Flying

When Eyetwitch dies, learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

, Sacrifice a Goblin: Facevaulter gets +2/+2 until end of turn.

Flying

Flying

When Faerie Miscreant enters the battlefield, if you control another creature named Faerie Miscreant, draw a card.