Karmak, Master of Sharks

Islandwalk, menace
Shark creatures you control have menace and get
+1/+1 for each other Shark creature you control.
{u}{u}, {t}: Create a 2/2 blue Shark creature token
with islandwalk. If a creature you don't control
died this turn, create two creature tokens instead.
Activate this ability only any time you could cast
a sorcery.