This combo will work technically in any class.

Turn 6: Safeguard (should have a Mech stick) or replace with Coppertail Imposter

Turn 7: (2)Mechwarper + (5)Faceless Manipulator + (0)Mechwarper + (0)SN1P-SN4P for an infinite damage combo.

Why Shaman? The simple answer is the abundance of silence removal for Big Priest. If you can Devolve/ Hex their Obsidian Statues you win!