During the early to mid game, he easily outmatches almost every hero in one-on-one combat. Very few heroes can take him on alone during the mid game. Even in the late game, lots of heroes struggle fighting him one on one, since the Guardian grows stronger as time passes.
Roshan is not a minion which can just be farmed like the other neutral camps, fighting him is an important team decision, as it needs the correct timing and approach since it can decide the future of the match. Usually, it is fought as a team when it is safe to do so, meaning when the enemy team does not display a threat at the moment (for example after a successful team fight).
The Guardian spawns at 10:00 minute mark, and respawns every 10 minutes.
Data in bold is the per camp level increase of that stat
Instant when out of combat (+0)
- Basic Attack
Prime Helix Guardian fires lasers from his eyes dealing damage.
Energy Damage: 210
Prime Helix Guardian slams the ground, slowing all enemies in a cone and damaging them.
Movement Speed Slow: ???
Movement Speed Slow Duration: ???
True Damage: 300
Prime Helix Guardian fires a flare that deals damage per second to all enemies standing in its AoE.
True Damage per Tick: 40
- Knock Back
After a short delay, for the next several seconds, Prime Helix Guardian knocks back all enemies near him.
True Damage: 150
When the Prime Helix Guardian is out of combat for several seconds, he will quickly restore his health.
Health per Second: ???
The Orb Prime Buff
Killing the Guardian grants the OP Buff to all living teammates for 150 seconds. The buff activates each allied hero's Prime Helix card, giving them the effects of it. The buff is lost when the Hero dies.