Urabrask // The Great Work, Clock of Omens, Krark-Clan Ironworks, Contagion Clasp, and Tekuthal, Inquiry Dominus

Prerequisites

• Urabrask // The Great Work on the battlefield
• Clock of Omens on the battlefield
• Krark-Clan Ironworks on the battlefield
• Contagion Clasp on the battlefield
• Tekuthal, Inquiry Dominus on the battlefield
• You've cast three or more instants and/or sorceries this turn
• available

Steps

1. Activate Urabrask by paying , exiling it and returning it to the battlefield as The Great Work
2. As The Great Work enters the battlefield, a lore counter is placed on it
3. The Great Work triggers, dealing three damage to an opponent and each creature they control
4. Activate Contagion Clasp by paying and tapping it, putting two lore counters on The Great Work
5. The Great Work's second and third abilities trigger
6. Resolve the first Great Work trigger, creating three Treasure tokens
7. Resolve the second Great Work trigger, allowing you to cast instants and sorceries from graveyards this turn, and then exiling The Great Work and returning it to the battlefield as Urabrask
8. Activate Clock of Omens by tapping two Treasures, untapping Contagion Clasp
9. Activate Krark-Clan Ironworks twice by sacrificing the two tapped Treasures, adding
10. Activate the final Treasure by tapping and sacrificing it, adding
11. Repeat

Results

• Infinite damage
• Infinite ETB
• Infinite LTB
• Infinite proliferate