1. Can i use a cup helper to double the value of a cup in the adventure field (i presume yes)?
2. Can i use a cup helper to double the value of a cup in my satchel? If yes, does the attached cup count towards the 3 card storage limit?
You can use a royal cup to double a pip cup (vitality) in the adventure field or satchel. If you attach it to a card in the satchel it does not count toward the three card limit.