Infinite LTB, Infinite ETB, Infinite sacrifice triggers, Infinite death triggers, Infinite +1/+1 counters on a creature
Activate Phantom Train by sacrificing Defiant Greatmaw.
When Defiant Greatmaw dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Defiant Greatmaw enters the battlefield, its first ability triggers, putting two -1/-1 counters on it.
Defiant Greatmaw's second ability triggers, removing a -1/-1 counter from another creature you control.
Resolve the Phantom Train ability from step 1
Repeat.
Component Cards
How It Works
Activate Phantom Train by sacrificing Defiant Greatmaw.
When Defiant Greatmaw dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Defiant Greatmaw enters the battlefield, its first ability triggers, putting two -1/-1 counters on it.
Defiant Greatmaw's second ability triggers, removing a -1/-1 counter from another creature you control.
Resolve the Phantom Train ability from step 1
Repeat.