Scuttling Sliver + Trazyn the Infinite + Amorphous Axe + Grim Monolith

Scuttling Sliver

Trazyn the Infinite

Amorphous Axe

Grim Monolith

How it works

1. Activate Trazyn using Grim Monolith's ability by tapping it, adding CCC.
2. Activate Trazyn by paying 2, untapping it.
3. Repeat.

This clever synergy turns the grave into a powerhouse by letting Trazyn the Infinite inherit the activated abilities of every artifact resting within it via Prismatic Gallery. With Amorphous Axe sitting in your graveyard, Trazyn becomes every creature type, granting it the built-in untap ability borrowed from Scuttling Sliver. This loop is fueled by Grim Monolith, also in the graveyard, which Trazyn taps for three colorless mana before using the Sliver's ability to untap for two mana, generating infinite colorless mana in the process.