Shadow Shaman is a ranged character. His primary attribute is intelligence. The hero is mainly taken as a support. Most effective in the early and mid game.
Shadow Shaman is a useful ally thanks to the big number of control spells. Hex combined with Shackles can disable any opponent for a long time, which can be very important in the late game. At the laning stage, Ether Shock gives the hero the opportunity to last hit a ranged creep or harass an enemy hero. Upgrading this ability will allow the character to push the lane more intensely. The Mass Serpent Wards ability is useful both in team fights and when demolishing enemy structures, and with the upgrade from Aghanim's Scepter, the ability will become even more effective, especially against large groups of enemies. Aghanim's Shard will upgrade the Shackles ability allowing it to deal additional damage in combat or affect enemy creeps to demolish structures faster.
Rhasta was just a starving youngling when picked up by a travelling con-man. The two continued from town to town, conjuring for moneyю Eventually, the pair's duplicitous past caught up with them, and they were ambushed by a mob of swindled ex-clients. The con-man was slain, and for the first time, Rhasta used his powers for darkness, massacring the attackers. He buried his beloved master, and now uses his powers to destroy any who would seek to do him harm.