Forum:Dinomist Pendulum Effect Scale 3

Alright I've just played in a tournament in my local card shop and not many people can give me a straight answer on an official ruling.

Okay so the situation is me running dinomist with both scales up and my opponent using a UA with a spell so i can activate card effects until after the damage step.

Dinomist Scale 3 implements if a dinomist card would be destroyed by battle or card effect then you can destroy this card instead. I was sure that this effect would happen after the damage step and a few players assume so as well but the opponent was adament that i couldnt activate it which meant he destroyed my monster and could attack again.

I may be wrong but noone i know can give me an answer so im reaching out to a few experts to try and sort out some sort of ruling for me! If you could get back to me asap thatd be amazing :)

Cheers, Sparker19