Custom Armor Ability

if armor in armor slot 0-3 (0 for boots and 3 for helmet) is the armor you want then

   for each entity as entity iterator in square cube of however big you want the range to be

      if they(entity iterator) aren't the event entity then

           add poison to them (0 is the first level l, and 1 is the second ll and so on)

it could be better I think but it gets the job done

Copying this will result in:

checking for all armor on

if armor is on it checks for "entity iterator" in a 4 block area

inside this it makes sure that the iterator isnt the player and the iterator doesnt already have poison

now it gives the iterator poison