When drawn in an aggressive deck, it completely invalidates an opponents ability to interact in combat, and the card itself has few to no answers
I no longer have the unlimited Machamp, but I do have an upgraded mint sealed shadowless one lol Oddly enough, I recall seeing the triangle error packs for sale once upon a time and not wanting them because they looked weird
Like all the other Power 9 cards, Black Lotus is banned pretty much everywhere, and restricted in Vintage - which means you can only have one copy in your deck
There are a lot of hoops to jump through to make Moonshadow work though, so the jury is still very much out on whether this card will actually see play
Some Commander decks even use all five colorswhite, blue, black, red, and greento unlock the full spectrum of strategies