Platinum Persecutor [Unknown Event] Sliver Whenever the final chapter ability

Whenever the final chapter ability of a Saga you control resolves

Creatures you control with first strike have double strike

Set: Multiverse Legends Type: Legendary Creature — Ooze Rarity: Rare Cost: {2}{B/G}{B/G} Companion — Each nonland card in your starting deck shares a card type

then shuffle

Platinum Persecutor [Unknown Event] Sliver Whenever the final chapter abilitySet: Unknown Event Type: Artifact Creature Angel Demon Rarity: Common Cost: {5} Flying Players can't lose the game or win the game. At the beginning of your upkeep, if each player has an empty library, sacrifice Platinum Persecutor and you win the game.