Defender

: Put a hatchling counter on Ludevic's Test Subject. Then if there are five or more hatchling counters on it, remove all of them and transform it.

As an additional cost to cast this spell, you may exile any number of white cards from your hand. This spell costs less to cast for each card exiled this way.

Exile target artifact, creature, or enchantment with mana value X or less.

You draw X cards and you lose X life, where X is the number of creatures you control.

Flying

Destroy target creature or enchantment.

Target creature gains deathtouch until end of turn. Regenerate it. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Flying

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Nighthowler and enchanted creature each get +X/+X, where X is the number of creature cards in all graveyards.

Noxious Hatchling enters with four -1/-1 counters on it.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Whenever you cast a black spell, remove a -1/-1 counter from Noxious Hatchling.

Whenever you cast a green spell, remove a -1/-1 counter from Noxious Hatchling.

: Add , , or .

This creature has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.)

: Add one mana of any color.

Gift a tapped Fish (You may promise an opponent a gift as you cast this spell. If you do, they create a tapped 1/1 blue Fish creature token before its other effects.)

Exile target nontoken creature. If the gift wasn't promised, return that card to the battlefield under its owner's control with a +1/+1 counter on it at the beginning of the next end step.

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)

As long as Pathbreaker Wurm is paired with another creature, both creatures have trample.

You may have Phantasmal Image enter as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it has "When this creature becomes the target of a spell or ability, sacrifice it."

Draw three cards, then discard a card.

Return each creature card with mana value X or less from your graveyard to the battlefield. Exile those creatures at the beginning of your next upkeep. Exile Rally the Ancestors.

When Ravenous Rotbelly enters, you may sacrifice up to three Zombies. When you sacrifice one or more Zombies this way, each opponent sacrifices that many creatures of their choice.

Flash

Natural Shelter — When Rescuer Chwinga enters, you may return another permanent you control to its owner's hand.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Whenever a creature dealt damage by Rot Wolf this turn dies, you may draw a card.

Lifelink

Discard a historic card: Sanctum Spirit gains indestructible until end of turn. (Artifacts, legendaries, and Sagas are historic.)

Bloodrush — , Discard Scab-Clan Charger: Target attacking creature gets +2/+4 until end of turn.

As Sewer Nemesis enters, choose a player.

Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard.

Whenever the chosen player casts a spell, that player mills a card.

Shambling Remains can't block.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Choose two —

• Counter target noncreature spell.

• Return target permanent to its owner's hand.

• Target creature gets -3/-3 until end of turn.

• Destroy target planeswalker.

Destroy target creature. Its controller loses 2 life.

Haste

Whenever Skullbriar, the Walking Grave deals combat damage to a player, put a +1/+1 counter on it.

Counters remain on Skullbriar as it moves to any zone other than a player's hand or library.

As an additional cost to cast this spell, discard a card or sacrifice a permanent.

Fathomless descent — Souls of the Lost's power is equal to the number of permanent cards in your graveyard and its toughness is equal to that number plus 1.

Spawning Pool enters tapped.

: Add .

: Spawning Pool becomes a 1/1 black Skeleton creature with ": Regenerate this creature" until end of turn. It's still a land. (If it regenerates, the next time it would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Flying

, Discard two cards: Return Stitchwing Skaab from your graveyard to the battlefield tapped.

When Supply Caravan enters, if you control a tapped creature, create a 1/1 white Warrior creature token with vigilance.

Flying

: Talonrend gets +1/-1 until end of turn.

Flying

Tattered Haunter can block only creatures with flying.

Deathtouch

At the beginning of your upkeep, sacrifice The Gitrog Monster unless you sacrifice a land.

You may play an additional land on each of your turns.

Whenever one or more land cards are put into your graveyard from anywhere, draw a card.

Target player draws two cards and loses 2 life.

Fuse (You may cast one or both halves of this card from your hand.)

Trouble deals damage to target player equal to the number of cards in that player's hand.

Fuse (You may cast one or both halves of this card from your hand.)

Return target creature to its owner's hand.

Whenever a source you control deals noncombat damage to an opponent, you may exile that many cards from the top of your library. You may play those cards this turn.

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Wandering Graybeard, you may reveal it. If you do, you gain 4 life.

Flying

When Wavesifter enters, investigate twice. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

Double strike

Bloodrush — , Discard Wrecking Ogre: Target attacking creature gets +3/+3 and gains double strike until end of turn.

Protection from green