Curse of Frictionless Step

You curse your opponent with everything they walk upon to be as slippery as ice, but not nearly as fun. The target must make a DC 20 Dex Saving Throw or be affected by the curse. If the target becomes “cursed,” then they must treat all terrain as difficult terrain. For every 5 ft. they attempt to move they must make a DC 15 Dex Saving Throw, where on a fail that is not a Nat 1 they fall prone, but on a Nat 1 they not only fall prone, but slide uncontrollably in the direction they were attempting to go, either until they run into an obstacle or move 30 ft. Their turn also automatically ends on a Nat 1 after sliding. They have disadvantage on all melee attacks while cursed, and have a -2 modifier to their Dex score. They do, however, have advantage on any performance check that relies on slipping.