Forbidden Chalice

Forbidden Chalice, a good card from raging battle, with alot of unseen potential. You saw this card in my last post (Koa'ki Meirus) as i suggested this for Barbaros, other than for random ATK boost and effect negation.
Let's focus on this card.


Forbidden Chalice let you negate a monster's effect to boost his ATK of 400. You can negate a monster's effect from either player's field, this means you can negate an opponent's monster's effect, or boost one of your monsters at the cost of negating his effect. That's not all, however, these were only the superficial uses of this card. Best things to do with this card is negating your own negative monster's effect AND boost their ATK, like barbaros. You can even use this card to reset monster's attack, like Light and Darkness Dragon for you, or your opponent's monsters with undefined attack, like chimeratech fortress/overload dragon.
Being a quick-play means you can stop your opponent's catastor when attacking a monster with higher attack, can low your opponent's LaDD attack when attacking and then kill him.
This card can give you a "bonus turn" with cards like Krystia (lettin' you special summon during this turn) or Jinzo (lettin' you activate trap for the turn).
This card let you use vayu on the field to synchro summon and then re-use him from the grave to synchro summon again. Not that useful, but i wanted to write this.
That's all I can write, other things are known. Play this where you can, it's good.