Feast of Sanity, and Marina Vendrell's Grimoire

Prerequisites

• Feast of Sanity on the battlefield
• Marina Vendrell's Grimoire on the battlefield

Steps

1. During your cleanup step, discard to your maximum hand size
2. Feast of Sanity triggers for each card discarded this way
3. Resolve the first Feast of Sanity trigger, dealing 1 damage to any target and causing you to gain 1 life
4. Marina Vendrell's Grimoire triggers, causing you to draw a card
5. Repeat from step 3 for each remaining Feast of Sanity trigger
6. Repeat from step 2

Results

• Infinite self-discard triggers
• Near-infinite lifegain triggers
• Infinite draw triggers
• Near-infinite damage
• Near-infinite lifegain
• Infinite looting