Menace Greven gets +X/+0, where X is the amount of life you've lost this turn. Whenever Greven attacks, you may sacrifice another creature. If you do, you draw cards equal to that creature's power and you lose life equal to that creature's toughness.

Flying, first strike, haste Whenever Rankle and Torbran deals combat damage to a player or battle, choose any number — • Each player creates a Treasure token. • Each player sacrifices a creature of their choice. • If a source would deal damage to a player or battle this turn, it deals that much damage plus 2 instead.

Menace At the beginning of your end step, if you have the initiative, create a Treasure token. Create three of those tokens instead if you've completed a dungeon. Choose a Background (You can have a Background as a second commander.)