Areeza is a letter, which you can write to 12 Imam "Imam Mehdi" (A.S. PBUH) and drop in river or ocean.
It is narrated from Imam Abu-Abdullah (A.S.): If one finds his livelihood is heavily curtailed, or is surrounded in severe hardship or is facing
unsolvable difficulties or has special wishes for the hereafter, one should write on a white piece of paper (the supplication below)
ensuring all the names (of Masomeen A.S.) are written in one line followed by one's prayers. Place it, at sunrise, in a flowing stream of
water (canal/river/Ocean).