mtg best demon support cards Deck Recommendations : r/EDH Goetic Familiar - Demon Tribal

When it enters the battlefield, its controller puts the top two cards of their library into the graveyard

Thats just one combo off the top of my head, and there are many more here

Not only can we exile lands we put into our graveyard but some of the most popular white staples: Esper Sentinel, Spirited Companion, Knight of the White Orchid, or Archaeomancers Map

If you manage to combine your Montunui Island Paradise Location with Reckless Questers like Maui Soaring Demigod, you can ramp your Inkwell, but there are few top-end threats to capitalize with

Moreover, the grixis uncommon Planeswalkers tend to be better than green-whites, making Proliferate even easier to set up for them

His affection is lethal