Tetsuo, Imperial Champion, Savage Beating, Mystic Retrieval, Said // Done, and Invasion of Arcavios // Invocation of the Founders

Prerequisites

• Tetsuo, Imperial Champion on the battlefield
• Savage Beating in hand
• Mystic Retrieval in hand or in the graveyard
• Said // Done in hand or in the graveyard
• Invasion of Arcavios // Invocation of the Founders on the battlefield
• Tetsuo has an Equipment attached to it with mana value 5 or greater
• Tetsuo does not have summoning sickness and cannot be blocked and killed by an opponent
• One of Mystic Retrieval or Said // Done must be in your hand, with the other in your graveyard

Steps

1. Declare Tetsuo as an attacker
2. Tetsuo triggers, causing you to cast Savage Beating without paying its mana cost, choosing its second mode
3. Invocation of the Founders triggers, copying Savage Beating
4. Resolve both Savage Beatings, causing you to get two additional combat phases after this one
5. Move to your first combat phase
6. Declare Tetsuo as an attacker
7. Tetsuo triggers, causing you to cast Mystic Retrieval without paying its mana cost, targeting Said Invocation of the Founders triggers, copying Mystic Retrieval, targeting Savage Beating
8. Resolve both Mystic Retrievals, causing you to return Said and Savage Beating from your graveyard to your hand
9. Move to your second combat phase
10. Repeat steps 1 through 4 one additional time
11. Declare Tetsuo as an attacker
12. Tetsuo triggers, causing you to cast Said without paying its mana cost, targeting Mystic Retrieval
13. Invocation of the Founders triggers, copying Said, targeting Savage Beating
14. Resolve both Saids, causing you to return Mystic Retrieval and Savage Beating from your graveyard to your hand
15. Move to your second combat phase, and repeat from step 1

Results

• Infinite storm count
• Infinite combat phases
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce
• Infinite magecraft triggers