Riven

If your deck includes Riven, Shattered (three Energy and one Calm Power), play her to a battlefield you control and she enters ready. When you play her, Weaponmaster lets her take one of your Equipment with its Equip cost reduced by one Power of any domain, even if another unit is wearing it. With Blade of the Exile attached, she is a 6-Might unit with Ganking. Move her into enemy units at the other battlefield and her attack trigger deals 2 damage to an enemy unit there before combat damage. The unit that gave up the Blade loses 3 Might and Ganking, so check what it was defending.

Broken Blade's exhaust trigger offers three modes, each once per turn: buff her, or spend her buff to Stun an enemy unit or ready her. If she kept a buff from an earlier turn and the Blade is unattached, exhaust a newcomer at your held battlefield to equip her: her printed 4, the Blade's +3 and the buff make 8 Might. Moving to attack exhausts her and forces a choice: the buff mode leaves her at 8, while spending the buff drops her to 7 for a Stun or a ready. Take the Stun when one defender decides combat, or the ready when a later exhaust can buff her again.

Deserter gets +1 Might each time another friendly unit becomes exhausted, including a different unit you exhaust to pay for her ready ability. After a Ganking unit takes an empty battlefield, play a new unit there, exhaust it to ready the Ganking unit, then move the Ganking unit to the second battlefield together with Deserter and one other unit, both of which started the turn in your base. The Ganking unit's two moves, the newcomer and the other attacker add four to Deserter's printed 5 Might, so she attacks at 9 Might. Take this line only when the exhausted newcomer, which still defends, can keep the first battlefield alone.