Since VZ is considered a spell in adition to being a minion, does it benefit from regular spell damage/crit damage/crit boost when it detonates? There is a talent in Necro tree that has both crit and minion crit (river of bones iirc) so I’m wondering does VZ double dip from that node or it gets only bonuses tagged as “minion”.
No, it’s a minion that casts a spell. It would only benefit from minion spell damage modifiers (both flat & %), it doesn’t double dip on any nodes that contain both player & minion modifiers (nothing does now that the Hollow Lich node was fixed).