Flames of the Blood Hand A 3 mana Skullcrack that does 4 direct damage to a player is pretty unplayable in most formats, but in a dedicated burn deck in EDH, I could see it
Meddling Mage There were a lot of head-scratchers or absurdly overpowered submissions at the Invitational that Chris Pikula won, but Chris instead submitted a supremely elegant design
Horribly pedantic examples: Considered with normal language like being a full set can be reasonably understood to be every card in a set, one through whatever, and a complete set can be every card in a set that can be pulled from a pack
Fiend Reflection #2 02863439 220
For example, rarely should one person be shuffling their deck while their opponent does nothing
This card already sees play in a variety of formats, EDH included