mtg avatar card sleeves Wizards of The Coast cushioned backing to protect cards and sleeves Art Sleeves Magic: The Gathering

Then there's that meme about 15 squirrels beating Emrakul, the Aeons Torn, at least Frog-Squirrels can reach Emrakul

This is very different from, lets say, custom alter cards, as the art on those is the property of the people who make them, and also, you know you arent buying a real card. Play it safe if you print the back of an MTG card and put a custom-altered version on the front, and restrict its use to kitchen table rules

Set Phasers to

Like Isshin, this is a very popular choice in casual Commander

If you sacrifice the creature targeted by the equip ability, then the ability won't resolve and the Equipment will remain attached to whatever it was attached to (if anything)