Stunning Reversal in exile (exiled by Elite Arcanist).
All permanents on the battlefield.
You control a land that can produce ({W} magic symbol) .
You are about to lose the game.
Elite Arcanist does not have summoning sickness.
({4} magic symbol) available.
Steps
Activate Elite Arcanist by paying ({4} magic symbol) and tapping it, casting and resolving a copy of Stunning Reversal without paying its mana cost.
Let the event that would cause you to lose happen, but instead draw seven cards and set your life total to 1.
Activate Mind Over Matter seven times by discarding seven cards, untapping Elite Arcanist and six lands you control.
Activate those lands by tapping them, adding ({5} magic symbol) ({W} magic symbol) .
Activate Jinxed Ring by sacrificing Chronosavant.
Jinxed Ring triggers.
In response, activate Chronosavant by paying ({1} magic symbol) ({W} magic symbol) , returning it from your graveyard to the battlefield tapped and skipping your next turn.
Activate Elite Arcanist by paying ({4} magic symbol) and tapping it, casting and resolving a copy of Stunning Reversal without paying its mana cost.
Let the Jinxed Ring trigger resolve, dealing 1 damage to you.
Repeat from step 2 until there are fewer than seven cards remaining in your library.
Resolve all Jinxed Ring abilities, causing an opponent to gain control of Jinxed Ring.