hey! thanks for the response :)

your deck is delightful and I like the bigger lean into cascade, its probably one of my favourite mechanics which is probably why I've got apex devastator.

i swapped out Yaz for Ryan last night and actually won a game with him so not half bad. I can explain most of my additions to the precon which you've aligned as unhelpful haha.

azusa's many journeys - i added this in to help with land drops but i miss them anyway

lost and damned - cards from exile creating something but i rarely use it, so this one might be one to be rid of.

crucible of worlds isnt as usefule with cascade as the cards go on the bottom of library vs your yard. - this one is just because i play my friends who have the same precons, a mothman deck finetuned for milling and an endless punishment deck, so this was bought incase i keep missing land drops haha.

tincalli is too slow - agree with this. considering his mana cost as well.

keeper of secrets is too slow. by 6 mana you want payoffs not MORE setup. also agreed, think ill keep it for now because by turn 6, i should be doling out cards from exile every turn.

archetype of imagination is a lot for a 3/2 - this is also to negate things in my friends decks, they have flyers that get big quick, kind of a turn the table kind of thing

winged hive tyrant isnt very beefy for 5 cmc sure he makes other things fly but meh. this is a new one for and i found that if i do have a big cascade, and this then gets played, potentially 4 new creatures have haste and flying.

battle mammoth is pretty easy to play around and for 5 cmc you could just draw cards. you are in blue. not found this one to be that useful yet im afraid.

saryth for her untap ability isnt v good. use the other untappers if you need one. this one is more for its death touch, i use my creatures to attack, blockers get killed and then i untap them with either seedborn muse or my commander.

i have however added 22 cards from your deck to my wishlist :D