Rather than having you reveal your whole hand, the printed version allows you to reveal the artifacts in your hand
Looters and rummagers usually only trade out a single card at a time, but some let you pick and choose how many cards you discard/draw
Thats a lot of potential card draw for one slot, and its very reminiscent of other effective card draw tools like Deep Analysis
demanding that players tribute monsters to play new monsters with a lot of level stars
Its a heavily-played card in formats where its legal, and thats mostly Vintage, Legacy, Cube, and EDH, where its a Game Changer
This card works better as a white combo piece than a general value card, but the work is worth the reward