Hecate hmm I've played her twice and she's not just a midlaner/INT she can also be played as a support (full tank) it's weird that it's possible but it is I tested it out and did well in team fights.
For me I max the her ability 3 just for the shield then the 1 then ult and finally 2.
My build for support-Chronos' Pendant, Gauntlet of Thebes, Oni Hunter's Garb, Spectral Armor, Spirit Robe, Prophetic Cloak. Your starter item can be anything depending on your carry.