Mana Short [Limited Edition Beta] Commander's Arsenal each defending player chooses any

each defending player chooses any number of creatures they control and divides them into a number of piles equal to the number of attacking creatures for whom that player is the defending player

Players discard cards and sacrifice creatures the same way

{T}: Destroy target black permanent

Set: Limited Edition Beta Type: Artifact Rarity: Rare Cost: {0} {T}: Add {B}

but not more life than the player's life total before the damage was dealt

Mana Short [Limited Edition Beta] Commander's Arsenal each defending player chooses anySet: Limited Edition Beta Type: Instant Rarity: Rare Cost: {2}{U} Tap all lands target player controls and that player loses all unspent mana.