(Psi)SeveredHead
Adventurer
The legend is SPECIFICALLY a crossbow bolt blessed by a Brahman, if I recall correctly. Hence they tried to stay true to the source.
Perhaps, but what if they had used a thrown dagger instead? The legend didn't specifically say you had to use a crossbow bolt, unless there's something you know that I don't
This Rakshasa I'm not even sure why they gave him a CR 10; a 6th level Archer is going to take him out by himself. Admittedly, he'll still have the problem with a first level cleric with a crossbow, but he's far weaker in his defense.
He can cast spells as a 9th-level sorcerer, like Improved Invisibility and Web.