I have an account with plat 4-5 mmr (plat last season) but is unranked because I stopped playing on that account. Are you still interested? I can also do the placements and get it into your desired range if necessary. I can also find a middleman since I'm not trusted.
I am a Diamond V in NA doing ELO Boosting services regardless of MMR/ LP Gain, though the lower the mmr, the longer it will take. NOT DOING SERVICES FOR PLAT+ because games won't be guaranteed to be a complete destruction and I will be forced to try-hard. I will try to mirror your summoner spell...