Scored 10 cards give [X2.5 Mult] if hand contains a straight
basic scoring joker for straights, since there aren't many of them. allows for 2 10's to give the x2.5 mult if you have four fingers
use of the number 10 is based on how there are 10 pins in bowling. also vaguely similar to how you roll a ball down the bowling lane, and at the end get a strike—same deal when playing high straights or royal flushes, you score all cards and at the end get the mult "strike" when the 10 is scored
might post art for a card concept