Yenna, Redtooth Regent, Cryptic Trilobite, Agatha's Soul Cauldron, Well Rested, and Chicken Troupe

Prerequisites

• Yenna, Redtooth Regent on the battlefield
• Cryptic Trilobite in exile
• Agatha's Soul Cauldron on the battlefield
• Well Rested on the battlefield
• Chicken Troupe in hand
• Yenna does not have summoning sickness
• available

Steps

1. Cast Chicken Troupe by paying
2. When Chicken Troupe enters the battlefield, it triggers, causing you to get and putting a name sticker on Well Rested
3. Activate Yenna targeting the Well Rested with a name sticker by paying and tapping it, creating a copy of it named Well Rested attached to any creature, untapping Yenna, and scrying 2
4. Each copy of Well Rested attached to Yenna triggers, each one putting two +1/+1 counters on Yenna and causing you to gain 2 life and draw a card
5. Activate Yenna using Cryptic Trilobite's ability by removing a +1/+1 counter from it, adding
6. Repeat from step 3

Results

• Infinite card draw
• Near-infinite lifegain
• Near-infinite lifegain triggers
• Infinite draw triggers
• Near-infinite scry
• Near-infinite colorless mana that can only be spent to activate abilities
• Near-infinite +1/+1 counters on Yenna