Tameshi, Reality Architect + Mind Over Matter + Ancient Den + Darksteel Citadel

Prerequisites

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Steps

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

Effects

• Infinite landfall triggers
• Infinite mana permanents you control can produce
• Infinite self-discard triggers