Activate Peregrin Took by sacrificing three Foods.
Experimental Confectioner's second ability triggers three times, creating three 1/1 Rat creature tokens and three Food artifact tokens.
Resolve the Peregrin Took ability, causing you to draw a card.
Repeat.

Infinite card draw

Infinite draw triggers

Near-infinite creature tokens

Near-infinite ETB

Peregrin Took

Experimental Confectioner

Activate Savvy Hunter by sacrificing two Foods.
Experimental Confectioner's second ability and Ygra trigger twice.
Resolve both Experimental Confectioner triggers, creating two 1/1 Rat  creature tokens that are Foods due to Ygra.
Resolve both Ygra triggers, putting four +1/+1 counters on it.
Resolve the Savvy Hunter ability, causing you to draw a card.
Repeat.

Near-infinite LTB

Near-infinite death triggers

Near-infinite sacrifice triggers

Near-infinite +1/+1 counters on Ygra

Ygra, Eater of All

Savvy Hunter

Activate Ashnod's Altar by sacrificing another creature, adding {C}{C}.
When the creature dies as a Food due to Ygra, Experimental Confectioner's second ability triggers, causing you to create a 1/1 Rat creature token.
Repeat.

Infinite LTB

Infinite ETB

Infinite sacrifice triggers

Infinite death triggers

Infinite colorless mana

Infinite +1/+1 counters on Ygra

Ashnod's Altar

Activate Warren Soultrader by paying 1 life and sacrificing another creature, creating a Food, Clue and Treasure token.
Activate the Treasure by tapping and sacrificing it, adding {1}.
Activate the Food by paying {1}, tapping and sacrificing it.
Experimental Confectioner triggers, creating a 1/1 Rat creature token.
Resolve the Food ability, causing you to gain 3 life.
Repeat.

Combos with "Experimental Confectioner"