Ways to auto cast Spells?

Any other ways to auto cast certain spells (like socketed one) besides a modifier on the Wand (cast every 8s?) or Mjolner? I know a Helmet also lets you cast spell when you use Bow attacks.

Any other ways?

Cast on Crit, Cast on Stun, Cast when Channeling, Cast on Damage Taken.

For a comprehensive overview you can take a look at the "Trigger" wiki page https://www.poewiki.net/wiki/Trigger

Specifically the "Skill Gems", "Support Gems" and "Unique items" sections

Hello there, triggers is the code word for autocasting spells, or more precisely skipping cast and time animation, also triggers are entangle to cooldowns, there are different cooldowns depepending of the trigger set up. Also are wepons that eneable triggers, my personal favorite is poet pen. Have a build review with an triple trigger set up explaining how it work if u are interested.
https://www.youtube.com/watch?v=eKXise0evyg&t=8s

Yeah. I like Sabo class a lot. Don't know why.

I am trying to find ways to cast more spells to take advantage of his 30% CD bonus.

I am really enjoying Choir of Storm + Storm brand synergy and I add Ball Lightning of Static.

I am curious what other ways to Trigger spells besides cast on critical stuff.

Poet Pen seems interesting. Haven't played with that in a long time. So I guess "Charge skill" is considered an attack so it shoots off those spells eh?

Kitava Helmet is interesting.

For sure kitava goess BRRRRRRRR, it ha the fastest cd also (0.1) and the only tigger set up able to muti tigger. I was looking into sabo too, for the trigger bots, but ai lags behind. If u are looking into triggering set ups, this is by far the most informative piece of post i found out there. For coldowns sources, u have 2 mods on bots and one on belt.
https://www.reddit.com/r/pathofexile/comments/fh8bnh/spellslinger_cooldown_thresholds_and_all_other/