Ok first of all the title of this topic is wrong, these are rules for 1v1, not for pk, there are no rules for pk, you can do ANYTHING to kill your opponent and survive. 1v1 is different though, 1v1 was made to prove who has more skill between opponents playing their own classes, using Spark in a 1v1 and winning it doesnt prove you got skill because is a easy way to kill someone, neither using pills because makes everything eisier. However, if you kill someone while he/she uses spark/pills and you kill him/her without them, means you are A LOT better than your opponent, so imo spark/pills to kill someone in a 1v1 shouldnt be allowed, if you want to do that then go do RPK instead of 1v1.