Grinning Ignus + Twinning Glass + Merrow Reejerey + Maskwood Nexus

Grinning Ignus

Twinning Glass

Merrow Reejerey

Maskwood Nexus

How it works

1. Cast Grinning Ignus by paying 2.
2. Merrow Reejerey triggers, untapping Twinning Glass.
3. Activate Grinning Ignus by paying and returning it to your hand from the battlefield, adding CC.
4. Activate Twinning Glass by paying 1 and tapping it, causing you to cast Grinning Ignus without paying its mana cost.
5. Repeat from step 2.

This intricate loop relies on Maskwood Nexus to turn Grinning Ignus into a Merfolk, allowing every re-casting of the red elemental to trigger Merrow Reejerey. That untap trigger is the linchpin that readies Twinning Glass over and over, letting you bypass mana costs to recast the returned Ignus for free. Because Grinning Ignus produces three mana ({C}{C}{R}) while only costing {2}{R} to replay—and with Twinning Glass handling the payment via its activated ability—you generate a net surplus of colorless mana with every iteration.