Activate Tooth and Claw by sacrificing two additional creatures.
When the creatures die, Pitiless Plunderer triggers twice, creating a Treasure artifact token and either a 2/2 Cat or 3/1 Dog creature token due to Jinnie Fay.
Resolve the Tooth and Claw ability, creating a 3/1 Carnivore creature token.
Repeat.
You may optionally replace both of Pitiless Plunderer's triggers with creating Cat or Dog tokens to get infinite creature tokens.
This ingenious loop lets you feed any surplus creatures into **Tooth and Claw** to constantly refuel your board, turning the sacrifice cost into an immediate engine of profit. Every time those creatures perish, **Pitiless Plunderer** steps in to harvest their demise by generating a steady stream of Treasure tokens, paying dividends off every single death. Meanwhile, **Jinnie Fay, Jetmir's Second** acts as your master artisan, gracefully stepping in to intercept token creation and convert your rewards into eager Cats, Dogs, or whatever beasts you need to keep the sacrifice chain spinning infinitely.