Oblivion Ring, Leonin Relic-Warder, and Fiend Hunter

Prerequisites

• Oblivion Ring in exile
• Leonin Relic-Warder on the battlefield
• Fiend Hunter in hand
• available

Steps

1. Cast Fiend Hunter
2. With Fiend Hunter's ETB trigger target Leonin Relic-Warder
3. Leonin Relic-Warder levaes the battlefield returning Oblivion Ring to play
4. Target Fiend Hunter with the Oblivion Ring trigger
5. When Fiend Hunter leaves the battlefield Leonin Relic-Warder enters the battlefield
6. Leonin Relic-Warder targets Oblivion Ring exiling it under Relic-Warder
7. Repeat steps 2-6

Results

• Infinite ETB
• Infinite LTB