X is the master of Y

Epic Face is the master of awesomeness.

Verminous Snaptrap is the master of lawn chairs.

Wilfre is the master of manipulation and shadows.

Pikachu is the master of electricity.

Random-ness Wikia is the master of random-ness.

Maxwell is the master of scribbling.

The Magic Conch Shell is the master of not letting you eat.

The Lorax is the master of the Truffula Trees.

O' Hare is the master of O' Hare Air.

Spongebob Squarepants is the master of absorbency.

Squidward Tentacles is the master of clarinets.

Fawful is the master of FURY.

The Dark Star is the master of darkness.

Dimentio is the master of dimensions.

The Negativitron is the master of negativity.