Claws of Living Trees

Once you cast this spell claws made of moss and wood apear on a 5tf square area whithin range, creatures that enter that area or start their turn on that area must suceed a dexterety saving throw, or take 2d4 magical slashing damage half as much on a sucessful saving throw, 
you can as a bonus action on following turns realocate the wood claws anyware whithin range 

At Higher Levels, casting this spell whit spell slots higher than 1st level increases the area of efect by 10ft and the damage by 1d4 per spell slot level.