Anticausal Vestige, Cloudstone Curio, and Clever Impersonator

Prerequisites

• Anticausal Vestige on the battlefield
• Cloudstone Curio on the battlefield
• Clever Impersonator in hand
• available

Steps

1. Cast Clever Impersonator by paying its mana cost
2. Choose to have it enter as a copy of Anticausal Vestige
3. When Clever Impersonator enters, Cloudstone Curio triggers, returning Anticausal Vestige from the battlefield to your hand
4. When Anticausal Vestige leaves the battlefield, it triggers, causing you to draw a card and and put Anticausal Vestige from your hand onto the battlefield
5. When Anticausal Vestige enters, Cloudstone Curio triggers, returning Clever Impersonator from the battlefield to your hand
6. When Clever Impersonator leaves the battlefield, it triggers, causing you to draw a card and put Clever Impersonator from your hand onto the battlefield as a copy of Anticausal Vestige
7. Repeat from step 2

Results

• Infinite card draw
• Near-infinite ETB
• Infinite draw triggers
• Near-infinite storm count
• Near-infinite LTB