Gretchen Titchwillow, Mind Over Matter, and Nykthos, Shrine to Nyx

Prerequisites

• Gretchen Titchwillow on the battlefield
• Mind Over Matter on the battlefield
• Nykthos, Shrine to Nyx on the battlefield
• Your devotion to green is at least two
• Your combined devotion to blue and green is at least twelve
• available

Steps

1. Activate Nykthos' second ability by paying and tapping it, adding an amount of or equal to your devotion to that color
2. Activate Gretchen by tapping , causing you to draw a card
3. Activate Mind Over Matter by discarding a card, untapping Nykthos
4. Repeat, alternating the colors of mana you add using Nykthos

Results

• Infinite self-discard triggers
• Infinite draw triggers
• Infinite looting
• Near-infinite card draw
• Near-infinite untap of permanents you control
• Near-infinite mana permanents you control can produce