So I have this Wizard1/Artificer3 multiclass character. Can I craft, say, a scroll of Cure Light Wounds taken from the Bard's spell list and then, as it is an arcane scroll, adding it to my spellbook? What I'm saying is, is there anything stopping me from eventually having every spell from every arcane casting class spell list in my spellbook?
(Note that per the SRD there is nothing from stopping you from adding spells to your spellbook even if you're not high enough level to cast them)