Terastodon

Multikicker 1 (You may pay an additional 1 any number of times as you cast this spell.) Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.

Multikicker 1G (You may pay an additional 1G any number of times as you cast this spell.) This creature enters with a +1/+1 counter on it for each time it was kicked. Other Elf creatures you control get +1/+1 for each +1/+1 counter on this creature.

This land enters tapped. T: Add W or U. 3WU: Until end of turn, this land becomes a 4/4 white and blue Elemental creature with flying and vigilance. It's still a land.