Just a little tip for playing Garen in ranked for those who really like Garen
As someone who finds Garen enjoyable and loves his concept, I tried to figure out when I should pick Garen during ranked. I came to a conclusion recently. Only pick Garen when the enemy team specializes in 1 type of damage. Garen's W passive increases his armor/mr by 20%. This allows Garen to take 2 offensive items while still achieving around 300 armor or MR as long as he only stacks one type of resistance. Basically it makes you an almost unkillable tank that can still deal massive damage. Against AD teams I take armor/level seals and flat armor glyphs. Against AP teams I take MR/lvl glyphs and hp/lvl seals. Also I always go 21/9/0 and ignite because as Garen you want to have kill threat on your lane opponent. Make sure to take enchanted armor in defense to increase the level of stackage. Give it a try and let me know what you think.
These are my results so far in high Platinum MMR. It remains to be seen whether it will work in Diamond, but I am almost there so I will update you guys after I have played some Diamond games.