What do you call a class that can give itself an insane ammount of bonuses and gets stronger the weaker the equipment it has is?
A cleric in Dungeons and Dragons 3.5 edition. Neverwinter Nights, to be precise. Pure clerics can run around spamming the most powerful spell in the entire game, Harm, and healing themselves to full health instantly as many as eighteen times in some builds. Even when hopelessly outmatched, a cleric usually wins simply from the sheer number of times they can instantly restore themselves to perfect health. Harm on the other hand is a spell that does the exact opposite, it reduces an enemy to 1 hit point. There is no damage limit, it can take off a 100,000,000 hit points as easily as 100. To say that they dominate in unmodded servers is like saying that water is somewhat helpful for the human body. This doesn't even count their ability to summon monsters almost as powerful as the entire mage and fighter class at the same levels, or their ability to render rogues useless with spells such as True Sight or Find Traps.