Scuttling Sliver + Trazyn the Infinite + Unnatural Selection + Basalt Monolith

Scuttling Sliver

Trazyn the Infinite

Unnatural Selection

Basalt Monolith

How it works

1. Activate Unnatural Selection by paying 1, causing Trazyn to become a Sliver until end of turn.
2. Activate Trazyn using Basalt Monolith's ability by tapping it, adding CCC.
3. Activate Trazyn by paying 2, untapping it.
4. Repeat from step 2.

This ingenious engine transforms Trazyn the Infinite into a one-man mana machine by stealing the text box of Basalt Monolith from your graveyard through Prismatic Gallery. Because Trazyn also gains the untap ability granted to Slivers by Scuttling Sliver, you only need Unnatural Selection to temporarily paint Trazyn with the Sliver creature type for a single mana. Once that type change is locked in, Trazyn can tap for three colorless mana using the Monolith's stolen ability and immediately untap itself for two, looping infinitely to generate boundless colorless mana.