Zimone, Quandrix Prodigy + Retreat to Coralhelm + Boros Garrison + Horizon Explorer

Zimone, Quandrix Prodigy

Retreat to Coralhelm

Boros Garrison

Horizon Explorer

How it works

1. Activate Zimone's first ability by paying 1 and tapping it, putting Boros Garrison from your hand onto the battlefield untapped due to Horizon Explorer.
2. When Boros Garrison enters the battlefield, it and Retreat to Coralhelm trigger.
3. Holding priority, activate Boros Garrison by tapping it, adding .
4. Resolve the Boros Garrison trigger from step 2, returning itself from the battlefield to your hand.
5. Resolve the Retreat to Coralhelm trigger, untapping Zimone.
6. Repeat.

This ingenious loop turns a simple bounce land into a boundless mana engine, perfectly orchestrated by Horizon Explorer's passive ability to keep lands entering untapped. By using Zimone, Quandrix Prodigy to continually drop Boros Garrison onto the battlefield, you trigger Retreat to Coralhelm to untap Zimone while Boros Garrison's own enters-the-battlefield trigger bounces it right back to your hand. Tapping Boros Garrison for red and white mana in response yields infinite red and white mana, fueled endlessly by the mana paid to activate Zimone along the way.