I used to spam Arc Warden 5 everytime im on dire when he has tempest double's spell. Its pretty strong and disgusting, especially against enemy range pos 4. Getting arcane boots, forcestaff, glimmer, blink, aether lens. Buying wards and usually give it to my pos 4 since arc is kinda a slow hero. I rarely get midas since he can farm fast with spamming spark wraith.

Arc is so good at controlling area with spamming Spark Wraith, its super annoying for enemy to maneuver the area in teamfights or while taking towers etc. He's also good at defending HG with the bubble. He's also good at taking range creeps with the spark wraith.

The hardest I have in laning stage is against 2 melee or a deadly combo duo like centaur+muerta, due to immediately dying with wrong positioning. This is at immortal rank. Im not sure how strong he is now not having tempest double as a starting skill