Released in 2003, LEGIONS is the second set in the ONSLAUGHT BLOCK (Onslaught, Legions, and Scourge). This is a 145 card set. This set is best known for having only creature cards. No Instants, Sorceries, Enchantments or non-creature Artifacts to be found.
Look for the following key cards:
Akroma, Angel of Wrath
Phage the Untouchable
Scion of Darkness