Appeal sets up a strike with a big creature, and Authority gives all your buddies vigilance
Miles Morales is extremely good, just as a 2-mana 1/2 that comes with two +1/+1 counters
On the other hand, it's very possible that newer players could be fooled, especially when it comes to older cards that occasionally feel weird even if they are real, thanks to variance in the printing process, or things like Masterpieces that have a strange foiling process
This means that more or less you seem to be able to bank them and then turn in a bunch of them any time you want to build a deck
Captain America, First Avenger Captain America, First Avenger is already a strong creature as a 4/4 for 3 mana, clearly an effect of the super soldier serum