Scuttling Sliver + Trazyn the Infinite + Arcane Adaptation + Prismatic Geoscope

Scuttling Sliver

Trazyn the Infinite

Arcane Adaptation

Prismatic Geoscope

How it works

1. Activate Trazyn using Prismatic Geoscope's ability by tapping it, adding at least three mana of any color.
2. Activate Trazyn by paying 2, untapping it.
3. Repeat.

This ingenious loop turns Trazyn the Infinite into a self-contained mana engine by leveraging the unique synergy of the rest of your board and graveyard. With Arcane Adaptation making your creatures (including Trazyn itself) Slivers, Scuttling Sliver grants Trazyn the ability to untap itself for just two mana. Meanwhile, Prismatic Geoscope sitting in your graveyard lets Trazyn tap itself for a windfall of colored mana thanks to Trazyn's Prismatic Gallery ability. Because tapping and untapping Trazyn costs less mana than the Geoscope produces, you can repeat this cycle endlessly to generate infinite colored mana.