Favor: Staff of Renewal
Items: Banded Armor + Scaled Helm + Totem to start then Vlemish, Plenor, Unbreakable boots. That is all.
Build: Snipe, Mines, Save, Snipe + Mines, Tracker, Save, Snipe + Mines, Mark of B, Save, Snipe + Mines, Mark of B, Maim etc.
To Buy: Building Regen I, Currency I, all reinforcements, lots of flag locks
Role: Support / Nuker -> a great asset to a team, snipe the **** out of the enemy team to help ally lane, able to deal a tonne of burst AoE damage with mines, able to lay mines to protect valuable areas, buys all citadel upgrades so allies can concetrate on items to help them pwn, generally really annoying to enemy team, and deadly throughout the game.
Stay in exp range of creeps. Stay out of range of enemies (start running as soon as you see an UB or LE coming for you). Snipe every time cooldown is up, lay mines everywhere (use totem near mines every now and then to give you lots of LoS for snipes).
Funny to play as when you get bored of playing as "insert overpowered demigod name here"
Enjoy.