So I can pontificate a bit based on Feather (which uses a lot of the same stuff in my build)
* Slow blinks are for defense, they dodge sweepers. They accrue advantage more slowly
* Fast blinks are for offense, they dodge only targeted removal but they get the value now
* Some slow blinks can target opponents' stuff. these have some value defensively for stopping combos and stuff.
That's obvious I'm sure, but for me the priority is usually slow blinks - keeping Tivit on board is mostly what you want to do. Same with Feather.
On the current blink package I see for you
I think
Siren's Ruse Turn to Mist,
Flicker of Fate and
Momentary Blink are a little iffy.
Otherworldly Journey is strictly better than at least one of them.
I would prioritize slow blinks over fast blinks at the 2 cmc slot, so play all the slow blinks first.
I think the 4 x 1 mana fast blinks is a great mix, but then I'd jam slow blinks over those.
I like the mix of ghostway/eerie interlude/semesters end/acrobatics for board blinks, might wijnd up cutting semesters end but it seems like a solid anthem honestly - blink your entire board then those counters add up! Acrobatics is also cuttable, might be better to just have
Mystical Tutor.
I cannot seem to find
incision of fate as a card. Is it a spoiler? edit: oh I found it
Planar Incision -- seems fine but worse than a slow blink I think.
I suspect that "cast sweeper and slow blink tivit" is going to be a pretty common pattern for this deck that wins games.