Tayam, Luminous Enigma, Cathodion, and Phantom Train

Prerequisites

• Tayam, Luminous Enigma on the battlefield
• Cathodion on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate Phantom Train by sacrificing Cathodion
2. Cathodion triggers, adding
3. Resolve the Phantom Train ability, putting a +1/+1 counter on Phantom Train and causing it to become a creature until end of turn Activate Phantom Train by sacrificing your persist/undying creature
4. The creature's persist/undying ability triggers, returning it to the battlefield with a vigilance counter and the appropriate choice of a +1/+1 or -1/-1 counter
5. Resolve the Phantom Train ability, putting a +1/+1 counter on Phantom Train and causing it to become a creature until end of turn Activate Tayam by paying , removing both counters from your persist/undying creature and one counter from another creature, causing yourself to mill three cards and return Cathodion from your graveyard to the battlefield
6. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite self-mill