Kravlos, devourer of seas

{u}, put a +1/+1 counter on Kravlos.
You can only use this ability whenever
you could cast a sorcery.
Kravlos's toughness is equal to how
many inslands all players control.
Adamant-If atleast 3 blue mana was
spent to cast this spell, it enters with
7 more toughness.