Grizzly Bears

Mox Jet

Bog Wraith

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

Paralyze

Enchant creature
When Paralyze enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If the player does, untap the creature.

Drudge Skeletons

{B}: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

Giant Spider

Reach (This creature can block creatures with flying.)

Mox Pearl

Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Swamp

Sol Ring

Lifeforce

Weakness

Enchant creature
Enchanted creature gets -2/-1.

Ironroot Treefolk

Howl from Beyond

Target creature gets +X/+0 until end of turn.

Unholy Strength

Enchant creature
Enchanted creature gets +2/+1.

Scryb Sprites

Forest

Llanowar Elves

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Giant Growth

Target creature gets +3/+3 until end of turn.