Soulshriek

A graveyard payoff built backward: the resource it scales off is the same resource it threatens to create, since the boosted creature is consumed once the turn ends and joins the pile that fuels the next cast. The design idea is the conversion of dead creatures into a single burst of damage, sized by attrition rather than mana. That makes it an aggressive accelerant for a deck already trading bodies, one that asks you to read your graveyard as stored power instead of lost cards. The friction is severe and honest: you forfeit the very creature you just pumped, so the spell only earns its rate as a finisher, on a swing that ends the game or trades the creature anyway. Spend it early and you have paid one mana to lose a creature for a temporary boost; spend it on the alpha strike and the sacrifice clause costs you nothing you were not already committing. Instant speed lets it ambush a blocked or unblocked attacker, turning a marginal creature into lethal inside combat math the opponent could not have read. It draws on the self-cannibalizing strain of black aggression, where the graveyard is a battery and the price of tapping it is stated plainly on the card rather than hidden behind a downside that catches you later.