Trazyn the Infinite + Crab Umbra + Prismatic Geoscope

Trazyn the Infinite

Crab Umbra

Prismatic Geoscope

How it works

1. Activate Trazyn using Prismatic Geoscope's ability by tapping it, adding at least 3.
2. Activate Crab Umbra by paying 2, untapping Trazyn.
3. Repeat.

This clever loop turns your graveyard into a powerhouse by letting Trazyn the Infinite inherit the activated abilities of every artifact resting there. With Crab Umbra sitting safely in your graveyard, Trazyn gains its untap ability, while a suitably set-up Prismatic Geoscope provides the mana generation required to fund the process. By tapping Trazyn for a surplus of mana through Prismatic Geoscope and then using that very mana to untap it with the Crab Umbra ability, you generate an infinite loop of colored mana to fuel the rest of your game plan.