Tameshi, Reality Architect, Mind Over Matter, Ancient Den, and Treasure Vault

Prerequisites

• Tameshi, Reality Architect on the battlefield
• Mind Over Matter on the battlefield
• Ancient Den on the battlefield
• Treasure Vault in hand

Steps

1. Activate Ancient Den by tapping it, adding
2. Activate Mind over Matter by discarding Treasure Vault, untapping Ancient Den
3. Activate Ancient Den by tapping it, adding
4. Activate Tameshi by paying and returning Ancient Den from the battlefield to your hand, returning Treasure Vault from your graveyard to the battlefield
5. Activate Mind over Matter by discarding Ancient Den, untapping any applicable permanent
6. Activate Tameshi by paying and returning Treasure Vault from the battlefield to your hand, returning Ancient Den from your graveyard to the battlefield
7. Repeat

Results

• Infinite colored mana
• Infinite landfall triggers
• Infinite mana permanents you control can produce
• Infinite self-discard triggers
• Infinite Treasure tokens
• Infinite untap of permanents you control