yet again the english needs to be fixed to make this understandable.
(card is a weapon) <<doesnt go on card text just in notes or something like that.
(name to effect) ex: owl's eye has sniper. only other thing is you have given this 2 abilities.... so the only target for the first freezing part would be the player or in the only sense i can find is their weapon has 20% of being frozen.
Deals 2 damage and has a 20% chance to freeze the opponents weapon.
(ability name)

: this card attacks target creature instead of attacking the opponent.