Christopher's Flower Garden

You infest the earth around you with sacred energy. In a 10ft radius around you a veritable carpet of short colorful flowers sprouts instantaneously. These flowers are magical and cannot be burned down. The flowers lighten the movement of those who tread them. For the duration, any ally in the area gains advantage on Acrobatics checks and Dexterity saving throws. Additionally, they can move 2 feet for every foot of movement they spend within the area.

If any spell affecting the growth of plants is cast overlapping the area (plant growth, spike growth, etc.) it will cause the garden at those specific squares to turn necrotic thereby losing its original powers and dealing 1 necrotic damage per square that any creature travels. This change cannot be reversed.  

If you maintain your Concentration on this spell for its whole Duration, the flowers becomes permanent and can't be dispelled. Otherwise, they wilt when the spell ends. 

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the radius of the garden increases by 5 feet for each slot level above 2nd.