Traveling Plague, Phyrexian Altar, and Gremlin Tamer

Prerequisites

• Traveling Plague in hand
• Phyrexian Altar on the battlefield
• Gremlin Tamer on the battlefield
• available

Steps

1. Cast Traveling Plague by paying , attaching it to another creature you control
2. When Traveling Plague enters, Gremlin Tamer triggers, creating a creature token
3. Activate Phyrexian Altar by sacrificing the creature Traveling Plague is attached to
4. When the creature dies, Traveling Plague triggers, returning itself from your graveyard to the battlefield attached to the token created in step 2
5. When Traveling Plague enters, Gremlin Tamer triggers, creating a creature token
6. Repeat from step 3

Results

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