Melmorshia, Energy Pulser

Hexproof, Trample, Islandwalk
{u}{u}{u}: Creatures your opponents control get-3/-3 and
are tapped until end of turn.
{g/u}{g/u}{u}:Creatures you control get +3/+3 until end of turn.
Partner with Kiora, Master of the Depths.
"These lands are under my protection."