Gorz, the Emissary of Darkness

Caius the Shadow Monarch's effect allows it to remove a monster on the field from play, while possessing a 2400 Atk body.

If Caius should remove a DARK monster, 1000 extra points of damage is dealt.

3400 Lifepoints is a lot, and can usually be enough to take a game away from someone.

Even with Gorz in-hand, you if don't have enough Lifepoints to survive, then what's the point?

Seems people have been forgetting Gorz's second effect...

When you take damage from a card your opponent controls while you control no cards, you can Special Summon this card from your hand. Then activate the appropriate effect, based on the type of damage:

Effect Damage: Inflict damage to your opponent equal to the damage you took.

People will usually attempt to summon Caius unopposed by backrow.

So...lesson learned here.

Use Gorz's second effect to save your face before it gets smashed!