Gogo, Master of Mimicry + High Tide + Retreat to Coralhelm + Mythos of Illuna + Swarm Intelligence

Gogo, Master of Mimicry

High Tide

Retreat to Coralhelm

Mythos of Illuna

Swarm Intelligence

How it works

1. Cast High Tide by paying .
2. Cast Mythos of Illuna by paying its mana cost, targeting an Island you control.
3. Swarm Intelligence triggers.
4. Holding priority, activate Gogo by paying 2 and tapping it, copying the Swarm Intelligence ability.
5. Resolve the copy of Swarm Intelligence's ability, copying the Mythos of Illuna spell, targeting an Island you control that enters the battlefield untapped.
6. Resolve the copy of Mythos of Illuna, 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.

This ingenious blue engine uses High Tide to massively boost your mana production every time an Island is tapped, turning a single drop of water into a flood. Mythos of Illuna provides the initial spark by targeting an Island to start cloning, while Swarm Intelligence ensures every cast multiplies out of hand. The true magic happens when Gogo, Master of Mimicry steps in to multiply those spell-copying triggers, allowing you to flood the battlefield with token Islands. Every time one of those fresh token Islands enters, Retreat to Coralhelm triggers to untap Gogo, letting you endlessly repeat the loop for infinite landfall and tapped Island tokens.