When it swings you can draw, and then ramp a land to increase its size
(Mulligans continue as normal.) Rift enters tapped
You can Ephemerate, Reanimate, Heat Shimmer or Clone your Eternal Witness, while Regrowth has a lot less ubiquitous synergy pieces
It saw a lot of play when it was reprinted in M12 since red decks often dont have other ways to use their graveyard
The deck then curves into powerful mid- and late-game threats with devastating abilities including Anje (blood tokens, drain), Butcher (creature sacrifice), Carmen (+1/+1 counters, life gain, reanimate), Edgar, Charmed Groom (anthem), Elenda, Saint of Dusk (lifelink, hexproof, buffs), Elenda, the Dusk Rose (+1/+1 counters, creature tokens), Henrika (sacrifice/draw/transform), Necropolis Regent (+1/+1 counters), and many many more
In Standard right now, while it isn't the most impressive deck in the meta, Disguise and Manifest Dread decks make a show by getting Disguised creatures out early and flipping them with Hauntwoods Shrieker or other abilities found in Duskmourn