Rell has always been known to be a support and I actually enjoyed playing her alot during those old pre-adjustment days. Now she's become a stronger Support/Jungler who I personally am addicted to playing in the Jungle now.

The guide is meant to give you at least a simple idea how Rell works in the Jungle and the best times to play certain builds with her

Rell Jungle may seem like an odd pick even after the fact she had jungle monster damage added to her abilities, but it's actually a very fun and versatile pick for any team that can fit into most comps given the right situations

From being a Hybrid whos able to fight 1v1s while tanking most of the damage, to a full on tank who CCs to living hell in the middle of a fight to even a full AP burst fighter, Rell fills many spots in the community to provide

Pros

Great CC:
Rell has some amazing CC chains that make her viable for ganking and engaging the enemy in a way that forces them to be scared to take a fight with her CDs up and ready to lump you down like a rock

Great Engage:
Especially now after her rework, Rell has some incredible engage potential that makes her able to start a fight with full power that's hard to ignore

Fast Jungle Clear:
Rell has some really great jungle clearing due to her adjustment, making it actually one of the fastest league has to offer currently

Table Turner:
Believe it or not alot of people misjudge Rell thinking once she's dismounted or misses something she's toughed down. If you chase her too long, she can actually show you JUST how bad it was to think this with great potential to do more than you'd imagine for a team

Cons

Long Cooldowns:
While Rell has some great abilities, they all have pretty decently long cooldowns for long fights making her have to rely on her team or tank power to sustain herself long enough to have anything come back up to continue fighting

Good CC Counters HER:
Rell needs movement and without it, she's pretty easy to toss around. Granted she has 2 abilites that don't need her to move but she needs to get close to use them, and her W is interruptable even mid-animation with Crash-Down making it hard to really STAY interested in an engage if you happen to just sit there looking dumbfounded

Underwhelming Epic Monster Clear
While on normal camps she's got fast clears, against epic monsters she needs her E and Q to do alot of damage otherwise you have to rely on her weak autos making it very hard to solo take an objective without someone possibly finding you right away first

Obviously, AP/Tank Rell Hybrid seems like a weird choice. It's not at all bad in any way, in fact it brings out a secret strength side to her that most Rell players wouldn't get out of the entire "Full Tank" build

Her Damage remains just as strong as her tank power

The items seem weird, Lich Bane especially on top of cosmic but it has a purpose besides AP.
Yes, you will be able to do chunk damage and defend yourself but that's not the main point.
The main point behind it is each item gives Ability Haste and Movement Speed. You'll stack constantly both so that you're able to keep up with most enemies while also being able to escape, have a better chance for ability usage and be a more overall use to your team.

It's a great strategy and I'd recommend trying it once you feel comfy on Rell

Build Choices

Each build has its own strengths and weaknesses, so I'll attempt to explain them as best as possible and when to build each

Hybrid

Hybrid is easily the most versatile of the 3 build path choices and provides benefits from both the Tank and AP build. There's no going wrong with this build and is always the go-to in general if you aren't sure what to follow in terms of build path of Tank or AP. I'd only avoid this if your team is majorly lacking any powerhouse damage being too beefy to do damage, or your team will be mainly AP with 3+ AP champs

Tank

Tank is the 2nd better choice of the 3 and still fun and viable to play regardless of what you might have going on. Being able to frontline and get into the enemy team as the center of attention, Tank Rell is going to provide your team with protection, CC and engage all at once. You should avoid building this however if your team lacks any damage to be able to afford going full tank, and should switch to Hybrid or AP Instead

AP Rell

I make it sound like it's a bad choice, but really it isn't. AP Rell does hurt, ALOT, when engaging in the later stages. The only real problem with AP Rell is the fact you need a good frontline to back you up when you go in since once you commit, you either die or you get that kill. AP Rell needs avoided if you already have alot of damage dealers on your team. She's a great burst engage capable of finishing off enemies or helping your team finish them off whatever she couldn't do

Overall, Rell is not a game changing Jungler but she's definitely a fun experience to play and a great peel champ overall for your team. There are some better Junglers than her, but also some worse ones.

She's a great pick for the Jungle now and once you learn her properly you're not gonna have any reason to doubt why I took the Metal Jungle into my hands in the first place