#plus Faust's concept art uses the word bridle not halter. visually hers just has a circle near the mouth too leaving it a Bit ambiguous

[temporalreverie]

oh i didn't think about this being ambiguous until drawing over that horse pic but the headpiece of Carrie Go-Round's carousel tack actually is actually more of a halter, not a bridle. the gold circle next to the corner of her mouth is just a thin disc on each side to attach the straps together the way a ring would (but visually simpler lol, she already has enough going on), rather than a metal bar that goes in the mouth. otherwise how would she have conversations & give ponies life advice with a bit in her mouth, lol.

she doesn't have a bit, reins, or a loop where on could attach reins because strongly channeling carousel magic is about letting her destiny guide her from internally, rather than something external like the rider having control. the purpose of the outfit is a mix of various things:

partially practical for giving horsieback rides with the saddle

partially aesthetic to give the carousel vibes

partially a work uniform mindset thing

partially comforting and grounding for anxiety like a weighted blanket/thundershirt

and overall helps her channel magic due to each of these

it isn't so much that the physical parts of the tack are inherently magical artifacts (it's just a quality custom made outfit), but rather all of the aforementioned reasons contribute to her having a focused mentality and/or being aligned with carousels.