jaethewalruss So glad to see this is working!
Yes! Your Starnie can have as many star strands as you'd like as long as you don't use star strands of a higher rarity than your Starnie~ Legendary myos have access to all the traits (except for Special traits which are not listed yet). Rare has access to rare, uncommon, and common. Uncommon has access to Uncommon and Common. Common can only use common traits. Do let me know if any of that sounds confusing and I'll do my best to clarify 💕