Activate Woe Strider by sacrificing Cauldron Familiar.
Activate Cauldron Familiar by sacrificing a Food, returning Cauldron Familiar to the battlefield from your graveyard.
Cauldron Familiar and Quintorius, History Chaser trigger.
Resolve the Quintorius, History Chaser trigger, creating a token and a Food token.
Resolve the Cauldron Familiar trigger, causing each opponent to lose 1 life and you to gain 1 life.
Repeat
This delightfully macabre loop turns Woe Strider into a sacrificial altar that feeds Cauldron Familiar right back into the fray, draining your opponents' life totals along the way. Each time the cat returns to the battlefield, Quintorius, History Chaser triggers upon a card leaving your graveyard, producing a Spirit token that conveniently satisfies Woe Strider's hunger. Meanwhile, Peregrin Took amplifies your token generation by turning every single instance of token creation into a welcome cascade of bonus Food tokens.