Junk 'n Gems

From BoardGameGeek:

In Junk 'n Gems, players sift through an attic of forgotten treasures, building toward the perfect moment to empty their hand. But you can only do so after reaching the required number of points, turning each round into a tense race to be first! On your turn, place a card into the attic, then take one or two cards worth up to twice that card's value. Play sets to activate powerful effects, score points, and get closer to emptying your hand. The stakes grow as the point threshold rises from round to round. Will your clever play be enough to claim victory? -description from the publisher