Warcraft

When Warcraft enters the battlefield, each player chooses Horde or Alliance.
Horde - Orcs you control get +1/+1 and have haste. Whenever a creature you control dies, it deals 1 damage to target creature or player.
Alliance - Humans you control get +1/+1
and have lifelink. Whenever a creature enters the battlefield, you gain 1 life.