Is there a way to restrict homebrew spells to certain classes?

So i'm new to making homebrew spells. I just finally figured out how to scale my first homebrew spell (im calling it Rumbleweed because i like the MTG card) and im trying to figure out how to restrict the spell to certain classes. Is there a way to make that possible? I want to make this spell be available just for Druid, Ranger, Nature Domain Cleric, & Oath of the Ancients Paladin (if im unable to restrict to subclasses oh well i can settle for druid and ranger.)

Thank you for telling me this. Don't worry i mark all my non-posted homebrew with a (V) in the name so people know its from my campaign. Everyone in my two groups is already aware of this and i don't play outside of those two groups much. Thank you for the info and the warning.