Dragonsguard Elite

Magecraft — Whenever you cast or copy an instant or sorcery spell, put a +1/+1 counter on this creature.
{4}{G}{G}: Double the number of +1/+1 counters on this creature.

Oran-Rief Ooze

When this creature enters, put a +1/+1 counter on target creature you control.
Whenever this creature attacks, put a +1/+1 counter on each attacking creature with a +1/+1 counter on it.

Vampire Spawn

When this creature enters, each opponent loses 2 life and you gain 2 life.

Might of Murasa

Kicker {2}{G} (You may pay an additional {2}{G} as you cast this spell.)
Target creature gets +3/+3 until end of turn. If this spell was kicked, that creature gets +5/+5 until end of turn instead.

Asmodeus the Archfiend

Binding Contract — If you would draw a card, exile the top card of your library face down instead.
{B}{B}{B}: Draw seven cards.
{B}: Return all cards exiled with Asmodeus to their owner's hand and you lose that much life.

Specter of the Fens

Flying
{5}{B}: Target opponent loses 2 life and you gain 2 life.

Karfell Kennel-Master

When this creature enters, up to two target creatures each get +1/+0 and gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Cleaving Reaper

Flying, trample
Pay 3 life: Return this card from your graveyard to your hand. Activate only if you had an Angel or Berserker enter the battlefield under your control this turn.

Forest

Dauntless Survivor

When this creature enters, put a +1/+1 counter on target creature.

Black Dragon

Flying
Acid Breath — When this creature enters, target creature an opponent controls gets -3/-3 until end of turn.

Cragplate Baloth

Kicker {2}{G}
This spell can't be countered.
Hexproof, haste
If this creature was kicked, it enters with four +1/+1 counters on it.

Scurrid Colony

Reach
This creature gets +2/+2 as long as you control eight or more lands.

Murasa Brute

Evolving Wilds

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Rabid Bite

Target creature you control deals damage equal to its power to target creature you don't control.