Blitzball Shot Rating: 3/10 A +3/+3 combat trick with trample can vary wildly in effectiveness
Even if it did see play, it would never become super-dominant, and someone somewhere was likely to play it
Giving you opponent a card is a steep drawback, but there are enough cards that will give you a card back in value, or more
However, the characters second ability, Break Free, readies Gustav The Giant, Terror of the Kingdom when one of the players other characters banishes an opposing character in a challenge
It's right around the corner, with a massive look at the set coming up on Saturday
Generally speaking, wed merely incorporate these things into a token or artifact deck in general, but that doesnt mean you cant make it work