Destroys all copies of a card activated from the owner’s deck.
Does not negate the activated card.
Hand is still safe.
This card can be used against cards spell/trap cards that are easily splashable into any deck with multiple copies (e.g. enemy controller, wall of disruption, etc.) or spell/trap cards that are needed to make a deck work (e.g. Masked Change)
this card is so underrated for an n card. 3 copies of these can be monstrous on the right hand. and you should have 3 of these for current meta.
if you against deck that relies much on spells to work (spellbook, masked hero, ojama xyz, etc), the dream combo would be like this: activate chain dispel in response of opponent spells, then chain magic deflector. good luck!
you can also chain it to your spell/trap, so spells such as sabatiel etc, and trap such as paleozoic etc would take huge advantage from this card. as long as you use it wisely.