What do I do with Jirachi {*}'s "Wish Upon a Star" Ability if my bench is full?
If you cannot put Jirachi {*} onto the bench, you just put it into your hand but do not draw another prize.
Source: Celestial Storm FAQ (2018-07-20), TPCi Rules Team (2018-08-02)

Relevant cards

Note: All applicable cards may not be listed below.
SM7_97