Inspiration runes = Trash
Magical footwear was the only decent rune and that was nerfed into a more snowball heavy rune than it was before. Let's look at the runes.
Futures market: Can loan (not even on your first buy, but after 2 minutes) 150 gold or so, upgrading to about 300-350 after 30 minutes compared to triumph, which gives 20 gold per kill/assist (easily 300 gold) + 12% missing health to save you or give sustain. Yeah and don't forget using debt costs 50 gold a use.
biscuits: nerfed into trash, if you think they're still good you're delusional
minion dematerializer: nerfed from 6 to 3, it's trash
Stopwatch: very niche, situational, and the item itself is bullshit, legit useless vs most champs, overpowered vs select few
hexflash: Are you trolling?
Cosmic insight/Time warptonic/ approach velocity: The only good runes in the entire tree and they're all on the same rune set so you can't actually use them in combination with each other.
The keystones
Unsealed spellbook: Enjoy the loss scrub Kleptomancy: Are you ezreal? Viktor? Some bullshit ranged top laner? Then you're trolling hard Glacial augment: Are you an ap champion building very specific items to abuse this? There are still better options but it's viable otherwise you're trolling
Like riot, cmon man! This spell tree could be completely removed from the game and almost nobody would notice, and if they did they would find a replacement in seconds