Changeling Hero, Karmic Guide, and Reaper of Flight Moonsilver

Prerequisites

• Changeling Hero in hand
• Karmic Guide on the battlefield
• Reaper of Flight Moonsilver on the battlefield
• available

Steps

1. Cast Changeling Hero by paying
2. Changeling Hero enters the battlefield, championing Karmic Guide
3. Activate Reaper of Flight Moonsilver by sacrificing Changeling Hero Changeling Hero dies, causing Karmic Guide to return to the battlefield from exile
4. Karmic Guide enters the battlefield, returning Changeling Hero from your graveyard to the battlefield
5. Resolve the Reaper of Flight Moonsilver ability
6. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinitely large creature until end of turn