If an enchanter casts hold person this feature lets it hit two targets if it normally targets 1?

Twinned Spell. Chromatic Orb: can you pick another damage type for 2nd target?

Would a dragon’s breath weapon be considered magical ?

2 weapon fighting: this Bonus Action must be rolled again to hit?

A detrimental story item

Possible for a Favored Soul to Twin the spell Spiritual Weapon? …and Witch Bolt?