Alatar, the Golden Flame

Flying, haste
When Alatar, the Golden Flame enters the battlefield, other creatures you control get +1/+1 and gain first strike until end of turn.
Whenever Alatar, the Golden Flame attacks, it deals 3 damage to target creature or planeswalker
Whenever a creature you control dies, Alatar, the Golden Flame deals 3 damage to each creature your opponent controls
{t}: Add {r}{r}{r}{r}.