Onslaught is a expert-level block. It consists of the expansion sets
Onslaught (October 2002),
Legions (January 2003) and
Scourge (May 2003). The block's main theme is creature types (for example,
Clerics and
Goblins), and much of the game play concerns interactions between these "tribes". The story continues the saga of the
Mirari from the previous block of expansion sets. Onslaught was the last block printed before the "modern" card face style was introduced.