Megaton's Fate, Dualcaster Mage, and Lilysplash Mentor

Prerequisites

• Megaton's Fate in hand
• Dualcaster Mage on the battlefield
• Lilysplash Mentor on the battlefield
• available

Steps

1. Cast Megaton's Fate by paying , targeting the indestructible artifact
2. Holding priority, activate Lilysplash Mentor by paying , blinking Dualcaster Mage
3. When Dualcaster Mage enters the battlefield, it triggers, copying Megaton's Fate, with the copy targeting the indestructible artifact
4. Resolve the copy of Megaton's Fate, failing to destroy the artifact due to it being indestructible, and creating four Treasure tokens
5. Activate three Treasure tokens by tapping and sacrificing them, adding
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite magecraft triggers
• Infinite blinking
• Infinite Treasure tokens