Arrow Barrage

The hero does 1d12 radiant damage inside a cube of 50 feet. Damage can be split between 3 creatures within area however caster chooses.

If a natural 20 is rolled, arrow barrage lasts for 1 minute dealing the initial damage roll each turn to any creature that fails a dexterity 18 saving throw within barrage, if creature succeeds, half damage is dealt; terrain becomes difficult terrain. If a botch is rolled, arrow barrage is centered upon caster.