You can definitely purchase other items with your club
What I can determine, though, is that the payoff for transforming this card is very good, and it is specifically this transformed effect which is more synergistic to blue builds
Boss's Chauffeur Far Fortune, End Boss Forge Boss Greasefang, Okiba Boss Hammerhead, Maggia Boss Hellspur Posse Boss Krenko, Mob Boss Legion Warboss Phabine, Boss's Confidant Racketeer Boss Raggadragga, Goreguts Boss Steamflogger Boss
Frequently Asked Questions What is the Two Legends (OP08) expansion
Notably missing from the update is the Commander format which only came under the control of Wizards after the volunteer-led rules committee stepped down after allegedly receiving death threats for banning cards which disrupted play, but were highly valued by collectors
"Expelled: Pokemon prove powerless against principals Disruptions prompt some schools to ban popular trading cards"