Dance of the Dead, and Worldgorger Dragon

Prerequisites

• Dance of the Dead in hand
• Worldgorger Dragon in the graveyard
• available

Steps

1. Cast Dance of the Dead by paying
2. Animate Dead enters the battlefield, returning Worldgorger Dragon from your graveyard to the battlefield attached with Dance of the Dead
3. Worldgorger Dragon enters the battlefield, exiling all other permanents you control
4. Dance of the Dead triggers, sacrificing Worldgorger Dragon
5. Worldgorger Dragon leaves the battlefield, returning all permanents exiled by it to the battlefield
6. Dance of the Dead enters the battlefield, returning Worldgorger Dragon from your graveyard to the battlefield attached with Dance of the Dead
7. Holding priority, activate all lands you control by tapping those, adding manas of any colors those lands can produce
8. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers