Poseidon, God of the Sea

Islandwalk, Immortal (If this creature is not on the battlefield or in your hand, return it to the battlefield
tapped)
Poseidon has ward {x}, where {x} is the number of islands you control
{u}{x}, {t}: Target creature gains islandwalk until
end of turn. {x} is equal to that creatures
toughness
{3}{u}{u}, {t}: Create an 8/8 blue kraken creature
token. Sacrifice it at the end of your turn