op 11 booster box msrp One Piece TCG: A Fist of Divine Speed OP-11 (Japanese) – KIMSHINYCARDS which is slated for a remake One Piece Card Game: Fist

The downside is youre limited to cards that actually have the printed madness ability, with only a few ways to apply that ability to other cards

send 1 Normal Monster from your hand or Deck to the GY, and if you do, the targeted monster gains ATK/DEF equal to the Level of the monster sent to the GY x 100, until the end of this turn (even if this card leaves the field)

Perhaps you are taking the stance that it is just a situational use, it wont happen to often in a duel, etc

10 Liliana, the Necromancer Liliana, the Necromancer is pretty much a better version of Liliana, Death Mage

It can beef itself up, swing multiple times, and even blanket negate everything during the Battle Phase