Mendicant Core, Guidelight + Ugin's Nexus + Meticulous Excavation

Prerequisites

• You have max speed.

Steps

1. 1Cast Ugin's Nexus by paying .
2. 2Mendicant Core triggers, copying the Ugin's Nexus spell.
3. 3Resolve both Ugin's Nexus spells.
4. 4The token Ugin's Nexus is put into exile due to the legend rule and its replacement effect, causing you to take an extra turn after this one.
5. 5Activate Meticulous Excavation by paying , returning Ugin's Nexus from the battlefield to your hand.
6. 6Repeat each turn.

Effects

• Infinite turns
• Lock