Vona, Butcher of Magan, Patron of the Vein, Swords to Plowshares, New Blood, Return to Dust, Utter End 6 targeted removal
Not competitively, but I can see myself building a deck around Rubinia Soulsinger if I pull one in a dollar pack at my LGS
Golgari Grave-Troll Banned in Modern (twice!) and restricted in Vintage, Golgari Grave-Troll is one of the most heinous Magic cards ever printed
More importantly, you need to control it
Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.) Illustrated by Marta Nael Standard Not Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
With the Mists of Lorien, you have a chance to pick and choose which cards you want to get rid of, or all of them if you have enough mana