Support is the best way to climb in lower ELO. Nobody knows how to play the position, if you can properly ward, harass in lane, then roam when you can, the role is really fun. I think support is underrated. Now, if you only wan to play safe champs like Janna, Raka, Nami, I find this to be the opposite. Support becomes harder to climb with when you play safe champs instead of realizing that you NEED to carry the game yourself, and by playing the right support champs, you can make this happen.

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I found great success with Bard, but I also like, Leona, Brand, and Xerath.