Doppelgang, and Skullwinder

Prerequisites

• Doppelgang in hand
• Skullwinder on the battlefield
• There are four permanents on the battlefield that can collectively tap to produce at least
• available

Steps

1. Cast Doppelgang by paying , creating five token copies of Skullwinder and of the four mana-producing permanents
2. When the Skullwinder tokens enter the battlefield, they trigger, returning Doppelgang and up to four other instant or sorcery cards from your graveyard to your hand and causing an opponent to return up to five cards to their hand from their graveyard
3. Activate seventeen of the mana-producing permanent tokens by tapping them, adding at least
4. Repeat
5. Once you have infinite tokens and mana, you may instead target any other permanents using Doppelgang

Results

• Infinite ETB
• Infinite storm count
• Infinite creature tokens
• Infinite magecraft triggers
• Infinite landfall triggers
• Return all instant and sorcery cards from your graveyard to your hand
• Infinite copies of any permanent on the battlefield
• Infinite mana permanents can produce
• Target opponent returns all cards in their graveyard to their hand