Blazing Star

For the duration, or until you dismiss the spell as an action, you are surrounded by a faint aura of shooting stars, which give your movements overwhelming momentum. You gain the following effects:

--You are immune to fall damage.

--As long as you continue travelling in a straight line, your movement does not provoke opportunity attacks.

--Once per turn, you may take the Dash action for free.

--You may use your spellcasting ability in place of Strength for unarmed strikes. 

--When you move at least 10 feet in a straight line toward a creature and then hit it with a melee attack on the same turn, the attack deals an extra 1d6 bludgeoning damage for every 10 feet you traveled before making the attack (maximum of 8d6). If your Attack action contains multiple attacks, only the first one receives this damage boost. You can also use a bonus action to Shove the target creature.

--If you are mounted, these effects apply to your mount as well. 

At Higher Levels: When you cast this spell using a 4th level spell slot or higher, the maximum bonus damage of the melee attack increases by 2d6 per level.