to be honest, i havent really done much and i have little to no idea about this spells and the other ways associated with it. the only very simple spells i have done are contact me spells and honey jar
now i just realized, when u asked about specific systems, i really dont know anything about this world.
Welcome Panda
its nice to see you in our forum as per me there are no simple spells all spells are powerful its not must that it has to be complicated i believe that demons are very smart as long as we put the words with strong believe on them it will work i guess still we all have lots to learn and travel
My friend wishes for your success