Black rose dragon and Beast of the pharaoh.

Ok one question.
I was wondering if you synchro Debris Dragon and Beast of the Pharaoh into Black Rose Dragon and then you use Black Rose Dragon's effect to blow up the field, can you use Pharaoh's effect to summon a zombie from the grave?

Beast of the pharaoh:
If this card is sent to the Graveyard for a Synchro Summon, you can Special Summon 1 Level 4 or lower Zombie-Type monster from your Graveyard.

I think you can special summon a zombie, because it will SS before BRD so after that if you use effect it will be destrooyed, so i believe you can.

I don't need "I believe" .I need a right answers with proof, so don't post if you don't know the right answer.

Beast is Chain Link 1, Black Rose is Chain Link 2. Resolves backwards.

Rose blows of the field, and a Zombie-Type monster is summoned.

It's pretty similar to the Debris + Dandy -> BRD thing.

Thanks, the effect is optional, so I thought pharaoh misses the timing.