Eternity Vessel and Dragonspark Reactor on the battlefield.
The number of charge counters on Eternity Vessel plus the number of charge counters on Dragonspark Reactor is greater than or equal to an opponent's life total.
({6} magic symbol) ({R} magic symbol) available.
Steps
Cast Dismantle by paying ({2} magic symbol) ({R} magic symbol) , destroying Eternity Vessel, and putting a number of charge counters on Dragonspark Reactor equal to the number Eternity Vessel had.
Activate Dragonspark Reactor by paying ({4} magic symbol) and sacrificing it, dealing damage equal to the number of charge counters on it to an opponent and up to one target creature.
The opponent loses the game due to having 0 or less life.