Hey, I had the idea of creating 21 in real life, stealing some cards from a normal deck and creating trump cards from paper cart or else
I found my self struggling with what trump cards should i was, but most importantly, how many from each type
since u created this (?), even though i don't fully understand what is this about, idk if i'm missing any key unformation, but maybe u could help me deciding how i'm going to build this deck

this is the trump deck that i have right know
1- draw2
1-draw3
(...)
1 draw 7
2 - return
1- destroy
3- one up
2 - two up
2 - shield
1 - shield +
2 - perfect draw
1 - go for 17
1 - go for 24
2 - exchange
2 - trump switch
2 - return

and what is the chance of getting a trump card when drawing a card?

Hope u can give it a hand and maybe take some ideias
thx