Orca Mega-Fortress of Darkness

{u}{t} Sacrifice "Torpedo Fish" you control, destroy 1 creature your opponent controls

{u}{ut} Sacrifice "Cannonball Spear Shellfish" Destroy one non-creature non- land permanent

{3}{u}{u}: During your upkeep return 1 Cannonball Spear Shellfish and 1 Torpedo Fish to your field from your GY