Additional factions may be made available in future expansion sets.

One expansion set, Storm Winds, was produced for the game.

This is the second expansion set made that did not have an equal number cards from each color.

Since that first release, 20 additional expansion sets have been released.

An expansion set of playing pieces was issued later at the same price.

Boosters from later expansion sets contain the same 1-rare/8-common-or-uncommon distribution.

The game received an official expansion set, Equipment & Weapons, in 1995.

An expansion set named Genesis was planned but never released.

Several expansion sets have also been published, including additional cards and board segments, allowing for more players.

Legendary creatures and lands were introduced in 1994 with Legends, the game's third expansion set.