Wall of fire

V, S, M; Concentration - 1 Minute
60 ft long, 20 ft high, or a ringed wall up to 20 ft
in diameter, 20 ft high. The wall is opaque.
When the wall appears, each creature within its
area must make a DEX ST 5d8 / half.
One side of the wall, deals 5d8 fire damage to
each creature EoT 10 ft of that side or inside the
wall or enters the wall.