Aquaman, Oceans Wake

Islandwalk, Hexproof, Banding
Prowess (Any time you cast an instant or sorcery
spell, this creature gets +1/+1 until end of turn.)
Aquaman can attack while he is in exile.
If Aquaman attacks in a band, each creature you control gains shroud until end of turn.
When Aquaman, Oceans wake is put into your graveyard from play summon X colorless 1/1
mutant kraken creature tokens where X is your devotion to blue.