Worldgorger Dragon, Felidar Guardian, and Oblivion Ring

Prerequisites

• Worldgorger Dragon in hand
• Felidar Guardian in exile
• Oblivion Ring on the battlefield
• available

Steps

1. Cast Worldgorger Dragon by paying
2. Worldgorger Dragon enters the battlefield, triggering its first ability, exiling all other permanents you control
3. Oblivion Ring leaves the battlefield, triggering its second ability, returning Felidar Guardian from exile to the battlefield
4. Felidar Guardian enters the battlefield, blinking Worldgorger Dragon
5. Worldgorger leaves and enters the battlefield, triggering its first and second abilities
6. Resolve the second Worldgorger Dragon trigger, returning all permanents exiled with it to the battlefield
7. Oblivion Ring enters the battlefield, triggering its first ability, exiling Felidar Guardian until Oblivion Ring leaves the battlefield
8. Activate all mana-producing lands you control by tapping them, adding at least
9. Resolve the first Worldgorger Dragon trigger, exiling all other permanents you control
10. Repeat from step 3

Results

• Infinite blinking of permanents you control
• Infinite ETB
• Infinite LTB
• Infinite mana permanents you control can produce