Rograkh, Son of Rohgahh, Myth Unbound, Grimgrin, Corpse-Born, and Mirage Mirror

Prerequisites

• Rograkh, Son of Rohgahh on the battlefield
• Myth Unbound on the battlefield
• Grimgrin, Corpse-Born on the battlefield
• Mirage Mirror on the battlefield

Steps

1. Activate Grimgrin by sacrificing Rograkh
2. Choose to have Rograkh return to the command zone from your graveyard
3. Myth Unbound and Mirage Mirror trigger, causing you to draw two cards
4. Resolve the Grimgrin ability
5. Cast Rograkh from the command zone by paying due to the cost reductions from Myth Unbound and Mirage Mirror
6. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite +1/+1 counters on a creature
• Near-infinite commander casts
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite creature sacrifice triggers
• Near-infinite death triggers
• Near-infinite storm count