Urtakh, Apex of Evolution

Flying, menace
Urtakh, Apex of Evolution gans +1/+1 for each creature mutated to it
•When a card with {u} in it's cost gets mutated under this card, it gains hexproof t'ill your next upkeep.
• When a card with {r} in its cost gets mutated under this card, it deals 3 damage to each opponent.
•When a card with {w} in its cost gets mutated under this card, you gain 2 life