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Besides, Umbral Collar surveils and can also sacrifice artifacts

Exxaxl: Ive never built a deck with Umori, the Collector , but Im picking it just for the artwork

Collapserpent gives another dimension to the deck and makes it slightly less reliant on JD to make power plays

The Main-Deck: The Artifacts allow you to control the board with destruction effects during the opponents turn, often either by being summoned with Artifact Sanctum or simply by being blown up by an opponents poor decision to blindly Mystical Space Typhoon

This plus a basic land is always a nice way to fix for a bomb, and it can even help you get threshold