A few jokers, and I don't exactly know the guidelines for these but I'm doing it anyway.
The student:
Rarity: common
Swaps mult with chips
(It's a useless joker)
(It's so they LEARN what multiplicative properties are)
(I definitely know them and didn't ever mistake them)
Socrates:
Rarity: rare/legendary
If you have three or more common jokers, then square the chip value
(I'm unsure if this is too overpowered, but legendary, isn't it for mult per cards usually? Idk I just liked the idea)