Whenever an opponent discards a card, exile it from their graveyard with a stash counter on it.
During your turn, you may play cards you don't own with stash counters on them from exile, and mana of any type can be spent to cast those spells.
, : Each opponent discards a card. Activate only as a sorcery.
Tinybones is a mono-black discard deck that turns opponents' hands into your resources. Force discards across the table, exile those cards with stash counters via Tinybones, then play them yourself for free value and any-color mana fixing. You grind opponents out of cards while building card advantage, then close with a discard-payoff finisher or sheer resource dominance.
Steals and casts opponents' cards, giving access to all five colors of spells off black mana
Built-in repeatable discard that pressures every opponent's hand each turn
Cheap two-mana commander that comes down early and snowballs
Mono-black gives deep access to tutors, recursion, and discard payoffs
Slow clock — discard is grindy and rarely closes games quickly
Activated ability is symmetrical card disadvantage if you can't capitalize
Empty hands (hellbent opponents) blunt your whole strategy
Vulnerable to commander removal that resets your stash engine
Mono-color means weak interaction with artifacts/enchantments and limited sweeper options