Trueheart Twins
Most cards that reward exert spend the payment on themselves: a pump, trample, an extra card, whatever the skipped untap step buys back that turn. This 4/4 does something stranger. It broadcasts every exert trigger across the whole board, its own and anyone else's, converting a personal one-turn transaction into a shared anthem that scales with how many creatures are willing to skip their next untap for the swing. The second line is where the math changes. In a shell packed with exerters, four attackers paying that cost is four instances of +1/+0 stacked on everyone, including the four that just paid. The Twins can exert on attack to fire the first trigger and come in as a 5/4, but the engine runs on the crew, not the captain: one body contributes one pump to a pile that wants to be much taller. What balances it is exactly what exert always charges, now multiplied across the team: a turn where your board stays tapped, holds no blockers, and sits exposed on the swing back. That is the tension the card is built around. It punishes going wide and slow, and only pays off when the attack closes before the untap penalty comes due. Surrounded by creatures eager to spend themselves in one decisive turn, it becomes the trigger that turns a board's willingness to overcommit into a single lethal step.

