Whenever you attack, you may sacrifice another creature or an artifact. If you do, create a 4/1 black Skeleton creature token with menace that's tapped and attacking. (It can't be blocked except by two or more creatures.) Choose a Background (You can have a Background as a second commander.)

Pay 1 life, Sacrifice another creature: Create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Other creatures you control get +1/+0. Whenever a nontoken creature you control dies, Judith deals 1 damage to any target.

At the beginning of your end step, create a Treasure token for each creature that died this turn. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Put target creature card from a graveyard onto the battlefield under your control. You lose life equal to its mana value.

When this creature enters, each player sacrifices a nontoken creature of their choice.