i was bored so i made that extremely rare Wubbox cost : 1B coins, 1M diamonds, 100 000 starpower, 100 000 shards and 10 000 relics. Need all monsters of the game (include Naturals, Ethereals, Legendary, Magical, Mythical, Paironormals, Celestials, Supernaturals, Wublins, Fires, Amber monsters) to power up. XP Gain : 3B Makes : 1000 diamonds per days, 1B coins per days, 10000 shards per day, 15k starpower per days and 1000 relics per day.
idk but imagine if that Wubbox becomes available on the real game like the only player to have that monster would be MPG who buy it and fill it with all his currencies then that he buy again 1B packs of diamonds with his money lol