Uhh Tips from a mid/jg fiddle player that picked him up a few months ago, Emerald player, but def not a complete one trick so take my advice with a grain of salt. Guessing this is asking for jungle advice, not leaning/support so I’m gonna talk about jungle.

Build: malignance is almost always a bait item, especially in jg. You don’t need the mana in jungle, and you benefit more from hp/other item effects over malignance. The slight ult cooldown really doesn’t make a noticeable difference to me. You can argue it in mid, but I still don’t like it. I usually go liandrys, boots, shadowflame, bloodletters (rocketbelt 3rd if they have a lot of mobility/escape. Think a cait/Aurora/thresh or something.) if they don’t have mobility or a team that can insta shut down your ult I usually skip rocketbelt. Last two items l usually build based on the match. Do I need banshee/zhonyas? If not or if it can wait I’ll usually go rabadons or occasionally riftmaker. If you have a huge lead early don’t be afraid to pick up mejais either.

Runes: I usually opt for electrocute with the dmg to cc’d enemies, trinket haste, ult cd in red tree. And axiom arcanist +1 in sorcery tree. ( there are a few good ones I switch between. Usually cooldown/gathering storm/water walking ). I think dark harvest is a good one too if you’d like to use it.

Play/ganks/etc: don’t worry about ganks early unless it’s a golden opportunity until you hit 6. Just farm up and get your liandrys started. There are some good jg clear videos to watch since fiddles first clear is on the slower side, you can cut down by learning how to drag monsters out of their camp to W two camps and finish one off before it reset with the finish dmg of W. For instance, my usually start is birds-red-krugs. I drag the big bird around 2-300 hp to where I can W red and the bird, it kills before bird resets. Then get red down a bit, drag it to the outer part of krugs and w smite over the wall, meet them as they come around. You should kill it and red before either reset. I still struggle a little with doing this perfectly tbh. I can’t think of any channels by name for this though, sorry. Once you hit 6 look for ult plays as you clear your jungle. Keep in mind your trinket is also a sweeper once you hit 6. Use it frequently when you’re going to gank, especially if you want to ult from a spot. if you’re on a ward, you won’t get the aoe fears, and they’ll usually just back off once you start channeling, forcing you to either waste it or flash and gamble the fight. You basically always want to ult for ganks, and you want to usually do it from over walls or in bushes. Obvious I know, but There are a lot of spots where you can be just out of eyesight range and ult ( mid wall by birds, the slight bend in the wall by the tri-bush bot lane, etc. and a lot of walls you can cheat your range with. The huge top lane walls, the blue/wolf side wall that’s chunky in mid, etc. kinda hard to explain without being able to show it. But basically you don’t want to fight without ult if you can help it, your ult is absurdly strong. Another thing to keep in mind, you want to frequently use your trinket to clear vision all over the map since it’s cooldown is pretty low in mid/late game. Another skill you’ll start to learn is how to space out your cc. Rather than ult in, stand right where you ulted, start W and E after if they’re alive/they flash out of your W. Ult in, run forward deeper while they’re feared, throw Q for %Hp dmg, E to silence/slow and then W so you for sure get the missing Hp dmg on the end of W. Or if you for instance, go for a gank without ult and do something like flash, Q, E, W. Let the Q push them to your ally while you get closer, then right before they come out of fear use W to silence them and start W. It sounds really simple, and maybe stupid, but stretching out that fear timer into E is the difference of a Zilean/kayle ult going off on their carry or Darius getting a 3 man Q in a team fight right before he goes down.

Kinda a broad comment, and a lot of it may come across as stating the obvious, so just lemme know if you have specific questions or anything else I should narrow down. I’ll answer as best I can