Omnath, Locus of the Roil + Abundance + Retreat to Coralhelm + Walking Atlas

Omnath, Locus of the Roil

Abundance

Retreat to Coralhelm

Walking Atlas

How it works

1. Activate Walking Atlas by tapping it, putting a land card from your hand onto the battlefield.
2. When the land enters the battlefield, Retreat to Coralhelm and Omnath's second ability triggers.
3. Resolve the Retreat to Coralhelm trigger, untapping Walking Atlas.
4. Resolve the Omnath trigger, putting a +1/+1 counter on an Elemental you control, and then causing you to reveal cards from the top of your library until you reveal a land card and put it into your hand due to Abundance.
5. Repeat.

This clever loop creates an unstoppable engine by turning every land drop into a self-sustaining cycle. When you use Walking Atlas to drop a land, Retreat to Coralhelm untaps the Atlas while Omnath, Locus of the Roil triggers to grow your board and force a draw. This is where Abundance shines: instead of drawing normally, you simply choose "land" to guarantee you immediately pull a fresh land into your hand, feeding it right back into the Atlas to repeat the process. With Omnath, Locus of the Roil also counting your Elementals, your lands will continually trigger extra card finds while dealing lethal damage across the board.