Grakas, Slimebound Schemer

Whenever you cast an instant or sorcery spell, you
may conjure a Slime (create a 1/1 black Ooze creature token).

Oozes you control have “When this creature dies, each opponent mills two cards.”
Sacrifice an Ooze: Draw a card, then discard a card.
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"Grakas listens with delight to the gurgling hymns that leak from the cracks in the stone."