Spread Ray

You change how you cast area of effect spells, turning them into a multitude of rays. These rays can be consciously controlled to a greater degree than simple AOE spells, granting various options for the shapes of your area effect abilities. 

Exchange: You may turn the area of effect of a spell into another type, maintaining the size. For example, Fireball covers a 40-foot circle. If turned into a 5-foot wide line, it would be ~250ft long. Bets practice is to eyeball it (and thus prevent long discussions at the table), but go ham. One of the following effects can be combined with this one. 

Cone: Select one target within the cone. The cone effect goes off, and then the cone focuses on your single target. The targeted creature must roll with disadvantage against your effect.

Line: You can shift your lines up to 5 ft to the left or right from the original path of the beam along any point of its lenght, allowing you avoid or hit targets in the way.

Radius: A shower of rays erupt out from the center of the effect. Creatures do not benefit evasion.

If the spell has multiple shapes as part of its casting, choose one which benefits from this feat.