Scuttling Sliver + Trazyn the Infinite + Imagecrafter + Coveted Jewel

Scuttling Sliver

Trazyn the Infinite

Imagecrafter

Coveted Jewel

How it works

1. Activate Imagecrafter by tapping it, causing Trazyn to become a Sliver until end of turn.
2. Activate Trazyn using Coveted Jewel's ability by tapping it, adding three mana of any color.
3. Activate Trazyn by paying 2, untapping it.
4. Repeat from step 2.

This ingenious graveyard-and-board synergy hinges on Trazyn the Infinite, whose Prismatic Gallery ability grants it the activated abilities of all artifacts in your graveyard—including Coveted Jewel's mana-producing tap ability. To fuel this engine, Imagecrafter temporarily morphs Trazyn into a Sliver, which in turn unlocks the "{2}: Untap this creature" ability bestowed by Scuttling Sliver. By tapping Trazyn for three mana via Coveted Jewel and spending two of that mana to untap it with Scuttling Sliver's trick, you generate an endless surplus of colored mana.