Avatar of the Elements

May not attack or defend
While on the battlefield:
• {w}, Elementals of this color gain lifelink
• {u}, Elementals of this color cannot be blocked
• {b}, Elementals of this color gain deathtouch
{bull} {r}, Elementals of this color gain double strike
{bull} {g}, Elementals of this color gain +1/+1
All effects can be stacked, but only last until
end of turn.