Activate Urza's Bauble by tapping and sacrificing it, looking at a random card in a player's hand and drawing a card at the beginning of the next turn's upkeep.
Activate Salvager of Ruin by sacrificing it, returning Urza's Bauble from your graveyard to your hand.
Cast Urza's Bauble by paying ({0} magic symbol) .
Teshar triggers, returning Salvager of Ruin from your graveyard to the battlefield.
Repeat.
Results
Infinite card draw at the beginning of the next turn's upkeep.
Infinite death triggers.
Infinite draw triggers at the beginning of the next turn's upkeep.