Greed

Junún Efreet

Flying
At the beginning of your upkeep, sacrifice this creature unless you pay {B}{B}.

Lost Soul

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

Marsh Gas

All creatures get -2/-0 until end of turn.

Brainwash

Enchant creature
Enchanted creature can't attack unless its controller pays {3}.

Murk Dwellers

Whenever this creature attacks and isn't blocked, it gets +2/+0 until end of combat.

Pit Scorpion

Poison Counter

Whenever this creature deals damage to a player, that player gets a poison counter. (A player with ten or more poison counters loses the game.)

Rag Man

{B}{B}{B}, {T}: Target opponent reveals their hand and discards a creature card at random. Activate only during your turn.

Spirit Shackle

Enchant creature
Whenever enchanted creature becomes tapped, put a -0/-2 counter on it.

Uncle Istvan

Prevent all damage that would be dealt to this creature by creatures.

Vampire Bats

Flying (This creature can't be blocked except by creatures with flying or reach.)
{B}: This creature gets +1/+0 until end of turn. Activate no more than twice each turn.

Word of Binding

Xenic Poltergeist

{T}: Until your next upkeep, target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value.

Circle of Protection: Artifacts

{2}: The next time an artifact source of your choice would deal damage to you this turn, prevent that damage.

Ali Baba

Ball Lightning

Stormforged Armor

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Haste (This creature can attack and {T} as soon as it comes under your control.)
At the beginning of the end step, sacrifice this creature.

Renaissance