The guild master, Nitro, sent Vindictus a party invite and when they entered the dungeon Vindictus only summoned Svetlana and she took out a lot of the creatures before they even got close to the party. There was no issues and the healers had not used a mana potion to this point as they were more than able to keep up with the damage. Vindictus had stayed near the back and not really done anything but the players could all feel the difference with him being there.
When they got to the first boss, Vindictus went to work and did so much damage so fast that the tanker's skills could not pull the attention of the boss. Even though they had beat the first two bosses before it had never been this fast or this easy. And they did not even realize that he had only used one of his four summons.