Breaching Dragonstorm, Mortuary, Mana Echoes, and Thermopod

Prerequisites

• Breaching Dragonstorm in hand
• Mortuary in the library
• Mana Echoes on the battlefield
• Thermopod on the battlefield
• undefined available

Steps

1. Activate Thermopod by sacrificing a nontoken Dragon with mana value 8 or less, adding
2. When the Dragon dies, Mortuary triggers, putting the Dragon from your graveyard onto the top of your library
3. Cast Breaching Dragonstorm by paying
4. When Breaching Dragonstorm enters the battlefield, its first ability triggers, causing you to exile the Dragon from the top of your library and cast it without paying its mana cost
5. When the Dragon enters the battlefield, Breaching Dragonstorm's second ability and Mana Echoes trigger
6. Resolve the Breaching Dragonstorm trigger, returning it from the battlefield to your hand
7. Resolve the Mana Echoes trigger, adding for each Dragon you control
8. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite storm count