Scuttling Sliver + Trazyn the Infinite + Amorphous Axe + Gilded Lotus

Scuttling Sliver

Trazyn the Infinite

Amorphous Axe

Gilded Lotus

How it works

1. Activate Trazyn using Gilded Lotus's ability by tapping it, adding three mana of any color.
2. Activate Trazyn by paying 2, untapping it.
3. Repeat.

By equipping Amorphous Axe to Trazyn the Infinite, you gracefully transform the Necron warlord into an artifact Sliver in addition to his other types, which is the clever linchpin that brings Scuttling Sliver's static untap ability into your graveyard's reach via Trazyn's Prismatic Gallery. This turns every activation of Gilded Lotus into a self-sustaining engine: you tap the Lotus for three mana, spend two of that mana to untap Trazyn using the copied sliver ability, and net one mana of any color with each iteration. Because Trazyn inherits these abilities directly, you can repeat this loop indefinitely to generate infinite colored mana right from the battlefield and graveyard.