mtg best demon support cards what would be some good for this I'm doing tribal and have all the demons I need just trying to fill the last couple slots thanks in advance Demon's need better support cards

Sacrifice Felidar Guardian, using Vivien's first ability

There are some corner cases, however

Rest in Peace states If a card or token would be put into a graveyard from anywhere, exile it instead . That means the exiled cards never even touch the graveyard

Older versions of that effect that dont give you a particular bonus include cards like Edric, Spymaster of Trest

Well, only about 2.6 million total Alpha cards were ever printed, which made the set extremely limited right from the start

Thats a lot of potential card draw for one slot, and its very reminiscent of other effective card draw tools like Deep Analysis