Artifact Creature â Construct
When Guardians of Koilos enters the battlefield, you may return another target historic permanent you control to its owner's hand. (Artifacts, legendaries, and Sagas are historic.)4/4
Yeong-Hao Han INTERVIEW
A card, spell, or permanent is historic if it has the legendary supertype, the artifact card type, or the Saga subtype. Having two of those qualities doesnâ€™t make an object more historic than another or provide an additional bonusâ€”an object either is historic or it isnâ€™t.