too be honest with you.
hes to weak as a jungler so i tried him a few times in the jungle and top and my result was he was way more stronger in top than he was in jungle.

i dont really use his ultimate too gank enemy's more as a escape or getting a easy kill.
for example ;- your around 120 health and the enemy got around 220 health you steal run in the bush and leap on them followed by your spikes then as a finishing touch your Taste theyr fear <3

why do you need flash when you have your ultimate and leap? well,
what you can do is flash over the wall when they chase you and when they flash over too leap back over. ultimate and get your *** out of there.
and for the ignite part it helped me get quite a few kills when they ran off.

im not really a good teller so i dont know if i gave enough information about this build.
and if i need too improve something just tell me and ill work on it.

thanks for using this build.