Bomber

Optimize Widespread Ruin and Magical Traps

Your study of magic focuses on optimizing magic that covers a large radius, optimizing the amount of damage and destruction inflicted, even at the cost of yourself. Often are they called upon for the extinction of large hordes of enemies, using a number of traps and magics to prevent the advance of such creatures and culling them en masse. If it wasn't for their volatility and lack of caution, they would make an optimal members in any adventuring party.

Demolitions Expert

Choose two Wizard spells with an area of effect, each of which must be no higher than level 2, and add them to your spellbook for free.

In addition, whenever you gain access to a new level of spell slots in this class, you can add one Wizard spell with an area of effect to your spellbook for free. The chosen spell must be of a level for which you have spell slots.

Self-Detonation

As a reaction, you can cause an explosion to erupt from you in a 20 ft. sphere. All creatures in range, including yourself, must succeed a Dexterity saving throw or take 8d6 fire damage, taking half as much damage on a successful save. You can only use this ability a number of times equal to your proficiency bonus per long rest.

Whenever you take damage, you must make a D20 test. If you roll a 1, you automatically trigger this ability, but it does not use your reaction.

You also learn Fireball at 5th level, which is always prepared and doesn't count against your total prepared spells.

Explosives Conjurer

You gain access to Glyph of Warding which is always prepared and whenever you cast the spell, you can choose to change the casting time to an action. You can only do this a number of times equal to your proficiency bonus per long rest and the glyph only lasts for 1 hour when cast this way.

Additionally, whenever you cast a spell that deals damage and targets a single creature, you can make the attack hit all creatures within 5 ft. of that creature as well. You can only use this ability a number of times equal to your proficiency modifier per long rest.

Grenade Optimization

When you cast a spell that has an area of effect and deals damage, you can roll an additional damage die for that spell.

You also gain resistance to fire damage.

Agents of Destruction

You can spend 1 minute  to cast Glyph of Warding magically inscribing a glyph onto a creature by touching them. When you inscribe the glyph, you set its trigger and choose whether it’s an explosive rune or a spell glyph, as explained in the spell.

The creature is unaware of the spell unless they witnessed the infusing process.