Drana, Liberator of Malakir

The trigger reads small on the card and is enormous in the chair: connect once with this flier, and every attacker you committed grows together. The sequencing is where the math compounds. First strike means she deals her combat damage in the first-strike step, the trigger goes on the stack, and when it resolves a +1/+1 counter lands on each attacking creature you control before ordinary combat damage is dealt. A blocker that lined up to trade with a 2/2 beside her now faces a 3/3 swinging through, and the rest of the board hardens in the same window. The catch is that Drana herself has to connect with the player: the counters key off her combat damage to a player specifically, so if she is blocked she deals no damage to the player (no trample on this body), the ability never fires, and the team does not grow. Evasion on her is therefore the whole engine, and flying is what keeps her firing past the turns when the ground clogs. That is the design problem this resolves for aggressive black, which has long wanted a payoff that scales the board it built rather than just adding one more body to it. The snowball starts only once she hits and accelerates every turn she survives, which is the rub: a three-toughness back puts her in range of the cheap removal and burn that aggressive decks run into. She ends games fast precisely because she is fragile, and those are the same fact.