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Position 5 Support Guide
There may not be a lot of glory in being a support, but that doesn't mean that being a good support is easy. This Dota 2 Position 5 Support Guide featuring Crystal Maiden covers the role differences between offensive and defensive supports along with more nuanced information that will hopefully change the way you play.
Watch the original video of this guide below, or hang in there and eventually read the written guide once that's available.