There isn’t super consistent rules or anything.

Pretty much each magic user in the dc universe is shown using magic differently.

Magic is energy pulled from the sphere of gods.

^Not necessarily.

^Well excluding the primordial magic that was collected by the guardians into the Starheart, the sphere of gods is where magic comes from in current continuity.

Yeah, but magic is kept very vague, there are no rules or limits to it's use and purpose.

Yes, it is a soft magic system at DC

Whatever it may be, I think it works really well and I have a feeling that they're going to ruin the whole system if they ever tried explaining it.

Magic according to this wiki is "pieces of creations". So I'm guessing primordial material/energy.