36 packs per box, 15 cards per pack.
Released in 1995, 4th EDITION is a white-bordered base set. This is a 378 card set that includes: Armageddon, Bad Moon, Ball Lightning, Birds of Paradise, Royal Assassin, Serra Angel, Shivan Dragon, and Wrath of God.
Set breakdown:
121 Rares
121 Uncommons
121 Commons
15 Lands