Infinite LTB, Infinite ETB, Infinite sacrifice triggers, Infinite death triggers, Infinite +1/+1 counters on a creature
Activate Phyrexian Altar by sacrificing the undying creature, adding .
When the creature dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
Activate Hexavus' second ability by paying and removing the +1/+1 counter from the undying creature, putting a +1/+1 counter on Hexavus.
Repeat.
Component Cards
How It Works
Activate Phyrexian Altar by sacrificing the undying creature, adding .
When the creature dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
Activate Hexavus' second ability by paying and removing the +1/+1 counter from the undying creature, putting a +1/+1 counter on Hexavus.
Repeat.