Skin guessing game

I've posted a thread on reddit, and I wanted to ask people here too to help me out on finding a particular skin that my friend wants.

Thanks so much in advance!

For those who can't click the link, I will copy and paste down here!

Hi, so I'm playing a game with my friend where I would have to guess a skin that he wants with given clue. I get 3 tries to guess.

The clues are: Its a jungler (legit jungler he says)

• You have to get the right skin (so a champ with multiple skin?)
• I have all the meta and past meta junglers (I believe he doesn't buy any other champs)
• and malphite is not a jungler
• I like animation difference + skin
• I think that champion has been played this season in lcs
• Champ i will assume that you have seen quite a bit (well if it's a legit jungler...)
• It is not a 750 RP skin

The skins I KNOW he has is: - Night hunter rengar

• 2 amumu skins (robot and gift he says)
• Warring kingdom J4
• Bruce LeeSin skin
• Neon Vi skin (he says he doesn't want officer)
• When I asked about Nautilus before he said he had Astro and lego one already
• Full metal rammus (was my first guess, 2 left)

I THINK it's a 975 skin. So if anyone can help me out, it'd be much appreciated! Thanks so much in advance!