Aminatou, the Fateshifter, Ichormoon Gauntlet, Doubling Season, and Kiora, Behemoth Beckoner

Prerequisites

• Aminatou, the Fateshifter on the battlefield
• Ichormoon Gauntlet on the battlefield
• Doubling Season on the battlefield
• Kiora, Behemoth Beckoner on the battlefield
• You control at least one additional planeswalker
• Aminatou has at least two loyalty counters on it

Steps

1. Activate any other planeswalker you control by putting zero loyalty counters on it, putting a loyalty counter on Aminatou
2. Activate Aminatou's second loyalty ability by removing a loyalty counter from it, blinking Kiora
3. Kiora enters the battlefield with fourteen loyalty counters due to Doubling Season
4. Activate Kiora by removing twelve loyalty counters from it, causing you to take an extra turn after this one
5. Repeat each turn

Results

• Infinite turns