For players following the Japanese meta, OP-10 cards provide key support pieces for Blue Doflamingo decks (led by the OP-01 Doflamingo leader, OP01-060), which dominated the early OP-10 format before a ban list update reshuffled the tier list
With the assistance of the decks Leader effect courtesy of the Leader card from 500 Years in the Future [OP-07], Kaku can immediately KO one of the opponents 4-cost Characters
Many of these cards have been banned from the game's earliest days, offering effects so powerful and potent that they had to be removed from the game with lightning speed
Whenever you reveal a nonland card this way, Keranos deals 3 damage to any target
Crystron Halquifibrax Heres a card that has such incredible effects, that other monsters ended up on the Ban List because of it
You can target another creature to create a copy when Delina attacks