Eternal Witness, Priest of Gix, Victimize, Phyrexian Altar, and Insidious Roots

Prerequisites

• Eternal Witness on the battlefield
• Priest of Gix on the battlefield
• Victimize in hand
• Phyrexian Altar on the battlefield
• Insidious Roots 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 Insidious Roots
3. Resolve the Priest of Gix trigger, adding
4. Resolve the Insidious Roots trigger, creating a creature token and putting a +1/+1 counter on each Plant you control Resolve the Eternal Witness trigger, returning Victimize from your graveyard to your hand
5. Repeat

Results

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinite storm count
• Infinite +1/+1 counters on certain creatures