Avenging Druid + Retreat to Coralhelm + Hermetic Study

Avenging Druid

Retreat to Coralhelm

Hermetic Study

How it works

1. Activate Avenging Druid by tapping it, dealing 1 damage to an opponent.
2. Avenging Druid triggers, causing you to reveal a land card from your library and put it onto the battlefield, and put all other cards revealed this way into your graveyard.
3. When the land enters the battlefield, Retreat to Coralhelm triggers, untapping Avenging Druid.
4. Repeat until no lands remain in your library and/or your library is empty.

This clever brew turns Avenging Druid into a self-contained engine of discovery by using Hermetic Study to give the Druid a way to ping an opponent directly. Every time that ping connects, the Druid's triggered ability sets off a cascade into your library until you hit a land, dumping everything else straight into your graveyard. The moment that land arrives, Retreat to Coralhelm springs to action with its landfall trigger, neatly untapping your Druid so the whole sequence can spin up again.