Assassin Dash

You must be able to see one creature of your choice within your range of mobility.
You take a stance and rush to face it. Once right next to it, you dodge or block their strike and counter.
The creature must then succeed on a Dexterity saving throw or take 1d6 + the failed roll's number.
Eitherway they spend their reaction, rendering them unable to do Oportunity attacks. This spell doesn't use up your mobility.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher add 1d6 per level.