Scuttling Sliver + Trazyn the Infinite + Amoeboid Changeling + Prismatic Geoscope

Scuttling Sliver

Trazyn the Infinite

Amoeboid Changeling

Prismatic Geoscope

How it works

1. Activate Amoeboid Changeling by tapping it, causing Trazyn to become a Sliver until end of turn.
2. Activate Trazyn using Prismatic Geoscope's ability by tapping it, adding at least three mana of any color.
3. Activate Trazyn by paying 2, untapping it.
4. Repeat from step 2.

This ingenious loop turns Trazyn the Infinite into a one-man mana engine by peering into your graveyard and leveraging the combined traits of your board. With Scuttling Sliver in your graveyard, Trazyn naturally inherits the ability to untap itself for two mana, while Amoeboid Changeling’s tap ability temporarily bestows the Sliver type directly onto Trazyn. Once Trazyn is a Sliver, it also gains access to the activated mana-producing ability of Prismatic Geoscope copied from your graveyard via Trazyn's own text. By tapping Trazyn for a surplus of mana and paying `{2}` to untap it through Scuttling Sliver's grafted instruction, you generate infinite colored mana to fuel any victory you desire.