Pull rates are low, demand is sky-high, and the secondary market exploded almost instantly upon release
Now lore wise, if you stay up to date with Yu-Gi-Oh!, the whole reason Super Polymerization exists is that Yubel created the spell to fuse herself with Jaden Yuki (or Judai if you prefer) The problem with old Yubel from Phantom Darkness is that their ability to redirect incoming damage to your opponent could have been more useful since, sadly your enemy can choose not to attack you
At only 1,100 HP, an O attack that does 610 damage, and a Jamming attack, it's, uh...well, it's fine for that price, but just keep in mind the other Ultimates are far better, their only problem is their price
Can I Draw My Third Card On An Opponents Turn