Mythos of Illuna + Dual Casting + Retreat to Coralhelm

Mythos of Illuna

Dual Casting

Retreat to Coralhelm

How it works

1. Cast Mythos of Illuna by paying 2, targeting any permanent.
2. Holding priority, activate any Mountain you control by tapping it, adding .
3. Activate the creature with Dual Casting attached by paying and tapping it, creating a copy of Mythos of Illuna targeting any basic Mountain you control.
4. Resolve the Mythos of Illuna copy, creating a token copy of the basic Mountain.
5. The basic Mountain token enters the battlefield, triggering Retreat to Coralhelm, untapping the creature with Dual Casting attached.
6. Repeat from step 2.