Jareth, The Goblin King

Goblins you control get +2/+0.
{r},Sacrifice three Goblins: Remove all crystal counter from all other creatures you control then put a crystal counter on target creature and gain control of it for as long as there is a crystal counter on it. Activate this ability only during your end step.
So, the Labyrinth is a piece of cake, is it? Well, let's see how you deal with this little slice...