Royal Herbalist, Cryptic Trilobite, and Heroic Feast

Prerequisites

• Royal Herbalist on the battlefield
• Cryptic Trilobite on the battlefield
• Heroic Feast on the battlefield
• available

Steps

1. Activate Royal Herbalist, causing you to gain 1 life
2. Heroic Feast triggers, putting a +1/+1 counter on Cryptic Trilobite
3. Activate Cryptic Trilobite by removing a +1/+1 counter from it, adding at least
4. Repeat

Results

• Exile your library
• Near-infinite lifegain
• Near-infinite lifegain triggers