Demonic Dread

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Target creature can't block this turn.

Valley Rannet

Mountaincycling {2}, forestcycling {2} ({2}, Discard this card: Search your library for a Mountain or Forest card, reveal it, put it into your hand, then shuffle.)

Marisi's Twinclaws

Jund Hackblade

As long as you control another multicolored permanent, this creature gets +1/+1 and has haste.

Swamp

Mountain

Defiler of Souls

Flying
At the beginning of each player's upkeep, that player sacrifices a monocolored creature of their choice.

Forest

Giant Ambush Beetle

Haste
When this creature enters, you may have target creature block it this turn if able.

Sangrite Backlash

Enchant creature
Enchanted creature gets +3/-3.

Bloodbraid Elf

Haste (This creature can attack and {T} as soon as it comes under your control.)
Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Terminate

Destroy target creature. It can't be regenerated.

Blitz Hellion

Trample, haste
At the beginning of the end step, this creature's owner shuffles it into their library.