This is a hard once per turn effect, meaning if you have another Caligo Claw Crow in your hand, you cant activate both of them
Heck, if you could already cast these cards, why not just cast every spell for
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Card Set(s) -PARAMOUNT WAR- [OP02] CARD VIEW OP02-087 | UC | CHARACTER Minotaur Attribute Strike Block icon 1 Type Impel Down/Jailer Beast Effect [Double Attack] (This card deals 2 damage.) [On K type, add up to 1 DON
I only found a little about them during my research
