Arcane Lance

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range, otherwise the spell fails. For the purposes of this spell, your weapon is considered to have the reach property. On a hit, the target suffers the attack’s normal effects, and it's speed is reduced by 10 feet until the start of your next turn.

This spell’s damage increases when you reach higher levels. At 5th level, the melee attack deals an extra 1d8 force damage to the target. This damage roll increases by 1d8 at 11th level and 17th level.

Special: If you move 20 feet or more on your turn before casting this spell, you can cast this spell as a bonus action, rather than an action. Once you cast this spell as a bonus action using this ability, you cannot cast the spell again until the start of your next turn.