Ishma, Envoy of the Depths

All Kraken and Leviathan spells you cast cost {2} less to cast.
At the beginning of your upkeep create X 1/1
blue Squid tokens where X is the number of
Kraken and Leviathan creatures you control.
{u}Sacrifice X creatures, then search your library
for a Kraken or Leviathan creature with power
equal to the number of sacrificed creatures,
put that creature onto the battlefield. It gains indestructible and hexproof until your next turn.