Bloodthirst 1 (If an opponent was dealt damage this turn, this creature enters the battlefield with a +1/+1 counter on it.)

Destroy target creature that isn't enchanted. It can't be regenerated.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Enchant creature

Enchanted creature gets -4/-1.

Dimir Aqueduct enters the battlefield tapped.

When Dimir Aqueduct enters the battlefield, return a land you control to its owner's hand.

{T}: Add {U}{B}.

{1}, {T}: Add {U}{B}.

Douse in Gloom deals 2 damage to target creature and you gain 2 life.

({B/G} can be paid with either {B} or {G}.)

Regenerate target creature. At this turn's next end of combat, destroy all creatures that blocked or were blocked by it this turn.

{T}: Gelectrode deals 1 damage to any target.

Whenever you cast an instant or sorcery spell, you may untap Gelectrode.

Sacrifice Goblin Flectomancer: You may change the targets of target instant or sorcery spell.

Prevent all damage that Indentured Oaf would deal to red creatures.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Izzet Boilerworks enters the battlefield tapped.

When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand.

{T}: Add {U}{R}.

({U/B} can be paid with either {U} or {B}.)

{2}, {T}: Look at the top card of target player's library. You may put that card into that player's graveyard.

Trample

Whenever Mindleech Mass deals combat damage to a player, you may look at that player's hand. If you do, you may cast a spell from among those cards without paying its mana cost.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

When Ogre Savant enters the battlefield, if {U} was spent to cast it, return target creature to its owner's hand.

Haunt (When this creature dies, exile it haunting target creature.)

When Orzhov Euthanist enters the battlefield or the creature it haunts dies, destroy target creature that was dealt damage this turn.

Replicate {1}{R} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)

Pyromatics deals 1 damage to any target.

Destroy target nonwhite, nonblack creature. Create a 1/1 white Spirit creature token with flying.

Haunt (When this spell card is put into a graveyard after resolving, exile it haunting target creature.)

When the creature Seize the Soul haunts dies, destroy target nonwhite, nonblack creature. Create a 1/1 white Spirit creature token with flying.

When Sell-Sword Brute dies, it deals 2 damage to you.

When Sparkmage Apprentice enters the battlefield, it deals 1 damage to any target.

When Steamcore Weird enters the battlefield, if {R} was spent to cast it, it deals 2 damage to any target.

Flying

Whenever Stinkweed Imp deals combat damage to a creature, destroy that creature.

Dredge 5 (If you would draw a card, you may mill five cards instead. If you do, return this card from your graveyard to your hand.)

Enchant creature

When Strands of Undeath enters the battlefield, target player discards two cards.

{B}: Regenerate enchanted creature.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Flying

{1}{R}: Torch Drake gets +1/+0 until end of turn.

When Vedalken Dismisser enters the battlefield, put target creature on top of its owner's library.

Flying

Whenever you cast an instant or sorcery spell, Wee Dragonauts gets +2/+0 until end of turn.