I recently starting practicing with a new jungle. Sometimes its fun to be sad
This is the build I've come up with, I think its unique. I was finally able to make this full build in the last game but I got worried that I wasn't doing it right when I finished it BEFORE I even made lvl 18.
Is that normal?
NoMonku1 votesAs far as your build go, the FM is pretty bad imo. You should get 
instead.
As far as your build goes, if you can actually obtain the gold necessary to buy these items, go for it. The main problem/hurdle for most junglers, though, is that they won't have the ability to get the gold for this. I looked you up and saw you were in bronze, so what I'm about to say next might be offensive, but I only mean it with the best of intentions. As far as jungling in bronze is concerned, I'm not too sure how it goes, but Amumu's main problem is that he has a fairly weak early game and takes time to ramp up. With 6 items he is a best and can tank a ton of damage, but since his early lvls are so weak, strong junglers can easily invade him and take him out 1v1, setting him back and making it so he can't get gold/xp. Maybe in bronze it can work, but at higher levels of play people will know how to abuse him, making it a LOT harder for you to be able to do well.
Leviathan22221 votesI didn't see anything offensive in your comment. That is actual constructive criticism, thank you.
I wanted to go for frozen mallet because it give more health and a 40% slow over rylai's 15% for multi-target attacks.
Also, I did have a hard time getting started, but not everybody can be hungry like the
NoMonku1 votesThe AP should help your dmg and the AoE slow is useful for your W. I guess since you were more focused on the 1v1, FM is superior, just Rylia's would help you deal more dmg spell wise then FM will.
mjack331 votesTo elaborate on the below, Rylai's works better than Frozen Mallet because his W procs it. It also boosts your AOE damage by a lot, while Mallet... mallet is single target on a low damage source on Amumu.
You have 1 expensive item there, so I don't really see why you couldn't do that semi-consistently.