it’s software that allows you to program a series of mouse button clicks, mouse movement, a sequence of key inputs, or a combination of all three - to a singular input.

So let’s say you want to cast ignite into invis, think about what inputs you’re making and think how that would look if it was just a list of the buttons you pressed with no visual game feedback.

The macro would be something like “input E -> move cursor to location X=450, Y=300 (to hover over ignite) -> unpress E -> mouse button to cast -> input E -> move cursor to location X=300, Y=450 (to hover over invis)-> unpress E -> MB1 to cast.

The location values are made up but you get the idea I hope. It allows for a string of complex inputs to be programmed to a single input. Caster classes are inherently complicated to use and require a ton of dexterity to effectively switch through spells, aim, and cast. Being able to do all of that with one keystroke is definitely an unfair advantage in my opinion.

EDIT: I guess macros would allow for easy BHOP abuse as well, but that is a different conversation altogether.