Which artefact ?
I'm assuming the one that comes with the base game (the blue one: "Next turn, play 2 places. Resolve both places.").
How it could be possible ?
On the last turn, you played the artifact. At the end of that turn, the artifact place card went to your discard pile. This turn, you can get cards from your discard pile into your hand (by paying will, because it is phase 1). Therefore you can get the artifact place card from your discard into your hand. You can thus play it as one of the two place cards you play this turn.