Forum:Night Assailant & Solemn Judgement

if i attempt to summon "Night Assailant" from my hand and my opponent activates "Solemn Judgement" and negates its summon, does its effect activate to retrieve a flip effect monster other than itself from my graveyard or was it sent to the graveyard from purgatory and not my hand?

Á Nazias Kram Ā