[ProfessorHeavy]

Yes, unfortunately, certain attributes are a tad difficult to work with. Hell, for some reason, Cow Mangler projectiles aren't compatible with projectile speed increases.

Whilst I believe there are other methods to approach this, If you're still trying to use normal attributes for this purpose, there are 3 attributes that have a similar effect to this.

215 "apply z velocity on damage"
Applies a vertical impulse for the damage victim. The impulse is on the Z axis.

216 "apply look velocity on damage"
Adds an impulse in the direction the attacker is facing. Tad problematic, sometimes.

522 "damage causes airblast"
Haven't tested this since Jungle Inferno, but this is still used in MvM, so it should work. It deals an airblast-like impulse on damage.

ohnoijustrealizedimlatetothisone