Homebrew
0-level (Cantrip) Enchantment
You brandish the weapon used in the spell’s casting and make a melee attack with it against one creature within 5 feet of you. On a hit, the target suffers the weapon attack’s normal effects and then suffers a premonition of doom until the start of your next turn. Unless the target moves 5 feet or more on its turn, the target takes 1d6 psychic damage, and the spell ends.
At 5th-level, the melee attack deals an extra 1d6 psychic damage to the target on a hit, and any additional damage the target takes increases to 2d6. Both damage rolls increase by 1d6 at 11th-level (2d6 and 3d6) and again at 17th-level (3d6 and 4d6).