The Master, Formed Anew + Phyrexian Altar + Persist Creature + Undying Creature

Prerequisites

• The Master on the battlefield as a copy of either the persist or undying creature.
• The Master does not have a +1/+1 counter on it if it is a copy of the undying creature, or a -1/-1 counter on it otherwise.
• Persist Creature; Undying Creature

Steps

1. 1Activate Phyrexian Altar by sacrificing The Master, adding one mana of any color.
2. 2When The Master dies, if it was a copy of the undying creature, its undying ability triggers, returning it from your graveyard to the battlefield as a copy of the persist creature with a +1/+1 counter on it.
3. 3Otherwise, if The Master was a copy of the persist creature, its persist ability triggers, returning it from your graveyard to the battlefield as a copy of the undying creature with a -1/-1 counter on it.
4. 4Repeat.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers