Enticing Depths-Swimmer

Deathtouch
{u/b}{u/b}, Discard a card a creature card: Enticing Depths-Swimmer gets +X/+X until end of turn. Where X is the number of islands your opponents control.
{u/b}{u/b}, Discard a land card: Flood target land.
Bioluminescence is your strongest defense in the depths.