Guildpact

Creature — Skeleton

{3}{B}, {T}: Target creature gains swampwalk until end of turn. (It can't be blocked as long as defending player controls a Swamp.)
{1}{B}: Regenerate this creature.

Restless Bones

Creature — Human Druid

({R/G} can be paid with either {R} or {G}.)
Sacrifice this creature: Add one mana of any color.

Wild Cantor

Ravnica: City of Guilds

Creature — Zombie Drake

Tattered Drake

Creature — Goblin Warrior

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

Goblin Spelunkers

Creature — Ogre Warrior

Prevent all damage that this creature would deal to red creatures.

Indentured Oaf

Creature — Lizard Warrior

{R}: This creature gets +1/-1 until end of turn.

Viashino Slasher

Creature — Centaur Warrior

({G/W} can be paid with either {G} or {W}.)
When this creature dies, you may gain 3 life.

Centaur Safeguard

Artifact Creature — Gargoyle

Flying
Whenever the first noncreature spell of a turn is cast, counter that spell.