Guild Wars 2

We had a lot of guildies in the map for a PvP Tournament. I was in the Arena as an Obstacle Placer. People left afterwards, so the map closed and I volunteered for the new map. I’m still in the Arena, able to attack both teams, but I am invincible.

That’s a similar effect to non-HoT players accessing the arena. They can attack as they like but can’t be attacked