You may cast this card from your graveyard if a creature not named Ebondeath, Dracolich died this turn.
Ebondeath is a resilient mono-black evasive beatstick that you keep recasting from the graveyard for four mana every time another creature dies that turn. Pair it with cheap death triggers, sacrifice outlets, and equipment/auras so the recurring Dragon either chips in flying damage or fuels an aristocrats engine that never runs out of a commander. Win by suiting it up as voltron or by grinding the table with repeated death payoffs.
Nearly impossible to keep down—dies and comes right back as long as anything else died that turn
Flash plus flying makes it a surprise blocker and reliable evasive attacker
Mono-black gives access to deep tutors, recursion, and ramp consistency
Sidesteps commander tax by being recast from the graveyard, not the command zone
Enters tapped, so it can't attack or block the turn it arrives
Needs a creature to have died this turn or it's stuck (exile and 'enters' hate shut it off)
Exile-based removal (Swords, Path effects, Anguished Unmaking) permanently answers it
Mono-black struggles with enchantments, flyers, and lacks card-advantage breadth outside black staples
Single-color decks have limited interaction and can stall against go-wide boards