Exodus 7:12
12 For each man cast down his staff, and they became serpents. But Aaron’s staff swallowed up their staffs.
Exodus 8:18
18 The cmagicians tried by their secret arts to produce gnats, but they could not. So there were gnats on man and beast.
Exodus 9:11
11 And wthe magicians could not stand before Moses because of the boils, for the boils came upon the magicians and upon all the Egyptians.