As long as Storage Matrix is untapped, each player chooses artifact, creature, or land during their untap step. That player can untap only permanents of the chosen type this step.
If you wish to make a return, please shop within 48 hours of receiving your order. Requests will be evaluated on a case-by-case basis; items submitted without a preauthorized return, may or may not be refunded.
Once a return is authorized, please pack it safely and send it back. For valuable cards/products, we recommend getting a tracking number and insurance to ensure your package makes it safely back to us.