Adventures in the Forgotten Realms even had one just last year with Split the Party having a "Don't" flavor text
Two mana is a lot of mana to need to pay, so you'll often get the Treasure from Smothering Tithe
(It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.") Land Land (CTRL to add secondary) Sorcery Sorcery (CTRL to add secondary) Maybeboard Bag of Devouring Whenever you sacrifice another nontoken artifact or creature, exile it
Lady Tremaine - Imperious Queen is the Dollar General Maleficent
A counterspell for noncreatures at two mana that also prevents your opponents from casting noncreature spells for the rest of the turn feels pretty powerful, even though its not without its limitations
Chrome Mox and Mox Diamond are useful despite their card disadvantage, rather like the pitch-counters