Campaign Trigger AI Attack

[Fyros]

Hello to everyone, I've added Tichondrius into Wc3 Campaign(Twilight of the Gods) and I've wanted Tichondrius add to Undead Scourge Wave, with wave attack to attack to Humans,Orcs,Night Elves and
I want Tichondrius to come alive from Altar of Darkness like Anetheron other Heroes, how can I do that Trigger? help me...