As far as MTG colorless cards go, it costs zero and sacrifices itself for three mana, making it one of the best colorless cards MTG vets prefer for quick, yet high-impact plays
Those numbers are used primarily in Battle, but they can also be mentioned in card effects
Virtual World build in OCG 2021.04 format ran 1 Mystic Mine in the Main Deck as an answer against powerful opening boards to shutdown all their Monster Effects, and is particularly effective against Tri-Brigade
A 4/4 Golem for five mana that gets -4/+4 whenever it blocks or becomes blocked, the key appeal of Karn is the manner in which it interacts with your other artifact cards
Mokuba trails in his assessment of how Yami's chances look, while his elder brother stares speechlessly
Monastery Mentor proved itself to be one of the best finishers in older formats like Vintage, where it's easy to chain together cheap spells and cantrips to potentially make a lethal army of prowess tokens in just a single turn, which is certainly strong but still doesn't really feel broken to me