Gogo, Master of Mimicry + Invasion of Vryn // Overloaded Mage-Ring + High Tide + Retreat to Coralhelm + Doppelgang

Gogo, Master of Mimicry

Invasion of Vryn // Overloaded Mage-Ring

High Tide

Retreat to Coralhelm

Doppelgang

How it works

1. Cast High Tide by paying .
2. Cast Doppelgang by paying its mana cost, targeting an Island you control.
3. Holding priority, activate Overloaded Mage-Ring by paying 1, tapping and sacrificing it, targeting the Doppelgang spell.
4. Holding priority, activate Gogo by paying 2 and tapping it, copying the Overloaded Mage-Ring ability, targeting the Doppelgang spell.
5. Resolve the copy of Overloaded Mage-Ring's ability, copying the Doppelgang spell, targeting an Island you control that enters the battlefield untapped.
6. Resolve the copy of Doppelgang, creating a token copy of the targeted Island.
7. When the Island token enters, Retreat to Coralhelm triggers, untapping Gogo.
8. Activate the Island token by tapping it, adding .
9. High Tide triggers, adding .
10. Repeat from step 4.