Insidious Roots + Phyrexian Altar + Tortured Existence

Mana needed: {B}

BG identity

Commander legal

The 3 combo pieces

• Insidious Roots
• Phyrexian Altar
• Tortured Existence

What must be in place

You have a creature card in hand and a creature card in your graveyard.

How to execute it

1. Activate Tortured Existence by paying {B} and discarding a creature card, returning another creature card from your graveyard to your hand.
2. Insidious Roots triggers, creating a creature token.
3. Activate Phyrexian Altar by sacrificing the creature token, adding {B}.
4. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite self-discard triggers