Elenda, the Dusk Rose, Ojer Taq, Deepest Foundation // Temple of Civilization, and Phyrexian Altar

Prerequisites

• Elenda, the Dusk Rose on the battlefield
• Ojer Taq, Deepest Foundation // Temple of Civilization on the battlefield
• Phyrexian Altar on the battlefield
• Elenda has power equal to or greater than 2 plus the number of times you've cast Elenda from the command zone this game

Steps

1. Activate Phyrexian Altar by sacrificing Elenda, adding
2. Choose to return Elenda to the command zone from your graveyard
3. When Elenda dies, its second ability triggers, creating a number of 1/1 Vampire creature tokens equal to three times Elenda's power
4. Activate Phyrexian Altar by sacrificing a Vampire, adding
5. Repeat step 4 until you have enough mana to cast Elenda
6. Cast Elenda from the command zone by paying plus commander tax, if applicable
7. Activate Phyrexian Altar by sacrificing a Vampire token, adding
8. When the Vampire dies, Elenda's first ability triggers, putting a +1/+1 counter on it
9. Repeat from step 7 for each remaining Vampire token
10. Repeat from step 1

Results

• Infinite +1/+1 counters on Elenda
• Infinite colored mana
• Infinite commander casts
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count