Dargo, the Shipwrecker + Gwenna, Eyes of Gaea + Dark-Dweller Oracle

Dargo, the Shipwrecker

Gwenna, Eyes of Gaea

Dark-Dweller Oracle

How it works

1. Activate Gwenna by tapping it, adding 1 that can only be spent to cast creature spells or to activate abilities of creatures.
2. Cast Dargo from the command zone by paying .
3. Gwenna triggers, putting a +1/+1 counter on it and untapping itself.
4. Activate Dark-Dweller Oracle by paying 1 and sacrificing Dargo.
5. Choose to return Dargo to the command zone from your graveyard.
6. Resolve the Dark-Dweller Oracle ability, exiling the top card of your library and allowing you to play it this turn.
7. Repeat.

This engine turns Dargo, the Shipwrecker into a recyclable sacrifice fodder thanks to the clever command zone replacement effect, allowing him to be repeatedly fed to Dark-Dweller Oracle for just a single mana. Every time Dargo is recast for a mere {R}, Gwenna, Eyes of Gaea is fueled by her own mana production to provide the exact {1}{R} needed to keep the loop going. More importantly, Gwenna's trigger recognizes Dargo's massive power and rewards each casting by growing her own stats and immediately untapping, ready to fund the next iteration.