School of Destruction

A school of magic that forgose the use of magic for convenience but only for damage and power. Any foe to a school of destruction wizard is someone in mortal peril. It is wizards like these that are the most dangerous whether you are a foe or friend. Your only goal is to burn bright and incinerate your enemy's or anyone in the general vicinity. After all, why should you shape your fireball around your allies? It should be their job to stay out of your way, and now you can incentivise it.

Destruction Familiarity

Beginning at 2nd level, you can nimbly dodge out of the way of certain area effects, such as an ancient red dragon’s fiery breath or an ice storm spell. When you are subjected to an effect that allows you to make a Dexterity saving throw to take only half damage, you instead take no damage if you succeed on the saving throw, and only half damage if you fail. "I've seen worse... somehow."

Overpower

Beginning at 2nd level, you can go all out at a cost. When you cast a damaging spell that affects other creatures that you can see and requires a dex save, you can expend an additional spell slot equal to the spell’s level. All creatures that make a saving throw take double damage from the spell. When you cast the spell you always count as if you are within the spells radius the same as if you were hit with said spell, you still suffer the same double damage effect. You can only use this ability a number of times equal to your intelligence ability score bonus divided by 2 (rounded down). "I may look bad but you should see the other guy."

Destructive Cantrips

Starting at 6th level, your damaging cantrips always hit hard. When you roll damage with a cantrip you can instead deal the average damage (rounded up). "People said I was dangerous and unpredictable. Now i'm predictably dangerous."

Unmitigated Destruction

Beginning at 10th level, when a creature takes 60 or more damage from a spell you cast you can regain a spell slot of a level lower than the level of the spell you just cast. "Wanna see me cast fireball? Now lets see me do it again!" 

Engine of Annihilation

At level 10 you deal double damage to objects and structures. "Arson! My favorite felony!"

The Flame of Destruction

Starting at 14th level, you can burn through your vitality to let loose pure unmitigated power which is matched by none. 

When you cast a spell that deals damage in a radius you can expend all your spell slots if you do the radius must be centered on yourself the radius is also tripled in size. The spell you cast is upcast by 9 levels, for example if you cast fireball with this it will be upcast as if it was a level 13 spell. You or any creature  behind total cover take no damage from this spell. Immediately after you use this ability you drop to 0 hp and have one death save automatically failed. In addition until you take a long rest any death save you take is an automatic failure.  "Death is but a setback. Pain is but an inconvenience. "Demise is but an inevitability. So lets try it together!"