Uyo, Silent Prophet + Retreat to Coralhelm + Walking Atlas

Prerequisites

• You have an instant or sorcery card in hand for which legal target(s) exist, if applicable.
• You control two lands that enter the battlefield untapped and can tap to produce mana.

Steps

1. 1Cast any instant or sorcery by paying its mana cost.
2. 2Holding priority, activate Uyo by paying and returning two lands you control from the battlefield to your hand, copying the instant or sorcery spell.
3. 3Activate Walking Atlas by tapping it, putting a land from your hand onto the battlefield.
4. 4When the land enters the battlefield, Retreat to Coralhelm triggers, untapping Walking Atlas
5. 5Repeat steps 3 and 4 one additional time.
6. 6Activate the lands by tapping them, adding at least .
7. 7Repeat from step 2.

Effects

• Infinite copies of instant and sorcery spells on the stack
• Infinite landfall triggers
• Infinite magecraft triggers