Will Huntresses still add buffs to other huntress when you kill an enemy with Phantasmal Claw?

I want to get a ton of Huntress bonus damage stacked up, so I’m investigating the item Phantasmal Claw. I’m not sure if it still gives Huntress stacks when the claw kills an enemy.

Does Phantasmal Claw stack with the Huntress buffs? Or is it just a worse Darkmage ability that you can put on any class?