Rakdos Joins Up, Starfield of Nyx, and Phyrexian Metamorph

Prerequisites

• Rakdos Joins Up on the battlefield
• Starfield of Nyx on the battlefield
• Phyrexian Metamorph on the battlefield

Steps

1. Cast Phyrexian Metamorph by paying its mana cost
2. Choose to have it enter the battlefield as a copy of Rakdos Joins Up
3. Put Phyrexian Metamorph into your graveyard due to the legend rule
4. Phyrexian Metamorph's first ability and second ability trigger, along with Rakdos Joins Up's second ability
5. Resolve Phyrexian Metamorph's second trigger and Rakdos Joins Up's trigger, dealing damage to target opponent
6. Resolve Phyrexian Metamorph's first trigger, returning it from your graveyard to the battlefield with two +1/+1 counters on it as a copy of Rakdos Joins Up
7. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite death triggers
• Infinite damage