Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Phantom Train + Young Wolf

WBG identity

Commander legal

The 3 combo pieces

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
• Phantom Train
• Young Wolf

How to execute it

1. Activate Phantom Train by sacrificing Young Wolf
2. When Young Wolf dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Resolve the Phantom Train ability.
4. Activate Phantom Train by sacrificing Young Wolf
5. When Young Wolf dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6. Young Wolf enters and dies as a state-based action due to having 0 toughness. Its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7. Resolve the Phantom Train ability from step 4.
8. Repeat from step 4.

What the combo produces

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