Whenever a nontoken creature an opponent controls dies, you may pay . If you do, return that card to the battlefield tapped under your control. It's a Treasure artifact with ", Sacrifice this artifact: Add one mana of any color," and it loses all other card types.
Vraska, the Silencer turns your opponents' dying creatures into a steady stream of Treasure-mana while you grind them out with removal and sacrifice value. Deploy her early, then weaponize board wipes, edicts, and spot removal to kill opposing creatures and pay to steal them as Treasures—accelerating your own threats while shrinking enemy boards. You win by out-resourcing the table and converting that mana advantage into big finishers or a combo kill.
Punishes opponents for losing creatures, converting their deaths into ramp for you
Cheap three-mana commander with deathtouch that trades up and dissuades attacks
Synergizes with any removal-heavy or board-wipe strategy you already play in BG
Treasures fuel ramp, fixing, and sacrifice/artifact payoffs simultaneously
Does nothing against token strategies since only nontoken creatures convert
Requires you to spend mana ( per creature) to capitalize, which competes with your turn
Treasures are fragile and easily blown up by artifact removal before you cash them in
No inherent way to close the game—she enables value, not a finish, so the deck can stall
Treasure payoff that can outright win the game as Vraska floods you with Treasures.
Add more recurring removal and sacrifice engines (Grave Pact, Dictate of Erebos, Fleshbag Marauder effects) so opponents constantly lose nontoken creatures for you to convert. Tighten the mana with fast rocks and Treasure payoffs like Revel in Riches, Mayhem Devil, and Pitiless Plunderer. For higher power, lean into a compact combo finish (e.g., a Blood Artist plus sacrifice loop) so all that Treasure mana translates into a guaranteed kill rather than just card advantage.