Fish Brood of the Tanked

Delve, Islandwalk, Swampwalk, Deathtouch.
When this creature enters the battlefield, create
X 1/1 Fish Tokens with Islandwalk.
Exile 3 cards from your graveyard: Create a Fish
Token.
Sacrifice any fish: Put 3 cards from your exile
into your graveyard.
If an ability would trigger when a fish dies, roll a
die, or flip a coin. If it doesn't end in your
favour, the counter the trigger.
Partner with Sasha, the Power Hungry