Voltaic servant seems a possible try in artifact decks as it is a key that work with chalice.

You can't ramp with it but you can untap monolith every turn with it. Not sure it's Worth but it looks like just such a nice card.

EDIT: Copying from the source:

•works on Grim Monolith/Basalt/etc. end of turn, setting them up to be reusable
•gives Vigilance to one of your dudes for free
•interacts very cutely with Steel Overseer and Hangarback Walker
•untaps Mishra's Factory end of turn before it resets

Add ratchet bomb and vial as possible additional interactions from legacy