From Shadow Era Wiki

Artifacts are a type of item card in Shadow Era.

Artifacts are items that stay on the field when played, causing various effects, from allowing the player to draw extra cards, to increasing attack. These cards are placed in the Support row, and do not leave the field unless they are destroyed. Also, all artifacts can only have 1 copy of themselves on the players side of the field at a time, a new copy cannot be played until the original is destroyed. In Shattered Fates, artifacts with Durability were introduced, allowing for artifacts with abilities activated by paying durability to exist.