The card doesn’t work, I’ve ran it against multiple decks that summon from their graves. Like a blue-eyes deck, by passed my XYZ effect. I don’t know how. Maybe needs a patch or something
You need to activate this card to prevent your opponent from activating effect in GY. If you opponent activate effect before you activate this then it will be useless.
Dweller doesnt negate anything just prevents them from happening. If you chain dweller to the activation of a grave EFF, the effect will still resolve properly since it already activate prior to dweller. Basically dweller has to happen before an effect activates.
You must activate dweller first before your opponent activate anything in the grave.
JLM
Not KoG
