Turi, Kiora's Lost Sister

Islandwalk
Maritime creature spells cost {1} less to cast and creatures of that type have "Whenever this
creature deals combat damage to a player, you
may draw a card." (Krakens, Leviathans, Octopus',
Fish, Starfish, Jellyfish, Serpents and Crabs count as
maritime.)
{1}{g}{u}: Tap or untap target creature or land.