Amardi, a 6-foot-9 inch forward from Indian Hills Community College, has one year of eligibility and will be able to play immediately.
Amardi was at the center of controversy earlier this month after he learned that the scholarship Iowa State had guaranteed to him last fall would not be available. Amardi had already signed a letter of intent with the school, but the agreement was voided when the Cyclones opted to accept Marshall transfer DeAndre Kane instead.
Amardi is the second one-year addition Altman has made this year, the other being former UNVL forward Mike Moser. The Ducks have one more scholarship available, and is reserved for Brazilian center Cristiano Felicio, who is still awaiting a passing SAT score.