Can a spell caster use Dispel Magic on a golem?

Rider on controlled mount wants to attack mid-move. Do rider and mount share one turn?

Are natural weapons there own category of weapon?

Would the effects of two Sickening Radiance stack?

Can Magic Initiate attune to Staff of Power or must he take level in wizard?

For each of the following spell, can you create the illusion of a flowing fountain?

Sun Soul Monk 2 total attacks, or 3 total attacks, when you get it at level 3?