Tandem Archetype

Though not an official gaming term, Tandem Archetype is a handy term for describing an Archetype that is designed for use alongside another Archetype. While some can be used without their partner Archetype, others are practically useless without them. Examples of Tandem Archetypes include:
 * Synchrons (Warriors)
 * Evil Heroes (Elemental Heroes)
 * Evil Tuners (Evil Synchros)