CommanderModernLegacyVintage
Result
Infinite +1/+1 counters on a creature, Infinite ETB, Infinite LTB, Infinite death triggers, Infinite sacrifice triggers
Activate Phantom Train by sacrificing Chaos Spewer.
When Chaos Spewer dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Chaos Spewer enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Phantom Train ability
Repeat.
Component Cards
How It Works
1
Activate Phantom Train by sacrificing Chaos Spewer.
When Chaos Spewer dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Chaos Spewer enters the battlefield, it triggers, putting a -1/-1 counter on it.
Resolve the Phantom Train ability
Repeat.