Tiktaalik, Diluvian Maw

(Transforms from Tika, Dry Outlander. GUR)
Trample
Whenever Tiktaalik, Diluvian Maw attacks,
create a 1/1 green, blue, and red Frog creature
token with "{t}: Add one mana of any color."
Whenever you cast an instant or sorcery spell,
put a +1/+1 counter on Tiktaalik.