Eternal Witness, Priest of Gix, Victimize, Phyrexian Altar, and Skeleton Crew

Prerequisites

• Eternal Witness on the battlefield
• Priest of Gix on the battlefield
• Victimize in hand
• Phyrexian Altar on the battlefield
• Skeleton Crew on the battlefield
• available

Steps

1. Activate Phyrexian Altar twice by sacrificing Priest of Gix and Eternal Witness, adding Cast Victimize by paying and sacrificing another creature, returning Eternal Witness and Priest of Gix from your graveyard to the battlefield
2. When Priest of Gix and Eternal Witness enter, they each trigger as well as Skeleton Crew
3. Resolve the Priest of Gix trigger, adding
4. Resolve the Skeleton Crew trigger, creating a creature token
5. Resolve the Eternal Witness trigger, returning Victimize from your graveyard to your hand
6. Repeat

Results

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinite storm count