Colossal Waterspine

Ward 3, Reach, Islandwalk, trample,
This spell cant be countered.
Monstrosity, {u}{u}{u}{5} When this spell is monstrous, it has a base power of 15/15 and gains menace, along with its other abilities.
{t}{5} Tap target creature, it gains 2 stun counters.