My goal was to create a system that easily allowed a variety of different abilities to be cast by anything. In order to achieve this I created abilities and launchers, abilities are the actual effect that goes off while launchers are how they are activated.
When spawned, abilities activate special abilities like placing oil down or lighting things on fire. Core elemental functions are placed inside of the BP_BaseAbility blueprint, some features can be accessed by a checkbox like lighting things on fire but more in depth features like placing oil can be done is custom ways through the abilities blueprint.
Players, enemies, pipe exhausts, and the boss all have launchers that act accordingly. These launchers take abilities as a variable, any ability can be placed inside and it will be cast appropriately based off of the type of launcher. Some launchers go off at regular intervals while others are activated by either the player or AI.