Ivus, once successfully summoned, will patrol around the Field of Strife for ten minutes, before pushing into the Frostwolf base. Ivus is more powerful if everyone on your team buffs Ivus as he accepts every buff. Ivus doesn't attack enemy NPCs, and will only attack enemy players. If Ivus reaches the Frostwolf base, he will stand in front of Frostwolf Keep and stay there unless provoked by enemy players, in which case he will give chase until he either leashes back, kills the enemy player, or is killed himself.