Tromokratis, Maw of the Sea

Protection from White, Islandwalk
If you control five or more basic lands when you cast Maw of the Sea you may pay {u}{u}{b}{b}, If you do put three +5/+5 counters on up to three target creatures.
Creatures with +5/+5 counters on them can't attack or block and deal 3 damage to their controllers at the start of each upkeep.