Overrun

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Blooming Marsh

Blooming Marsh enters tapped unless you control two or fewer other lands.
{T}: Add {B} or {G}.

Bayou

Spore Frog

Sacrifice Spore Frog: Prevent all combat damage that would be dealt this turn.

Birds of Paradise

Recycle

Skip your draw step.
Whenever you play a card, draw a card.
Your maximum hand size is two.

Altar of Dementia

Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

Aluren

Any player may cast creature spells with mana value 3 or less without paying their mana costs and as though they had flash.

Ornithopter

Fastbond

You may play any number of lands on each of your turns.
Whenever you play a land, if it wasn't the first land you played this turn, Fastbond deals 1 damage to you.

Demonic Tutor

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

Llanowar Elves

Filigree Familiar

When Filigree Familiar enters, you gain 2 life.
When Filigree Familiar dies, draw a card.