Refactored the class for better readability.
* Added getPlayerByEventType method, instead of calling it directly from checkFor().
* Added pass method.
* Checking for false results first to reduce the amount of if-else.
* Renamed SlimefunItem talisman -> SlimefunItem item.
* Created new Talisman talisman = (Talisman) item, after instanceof check.
* Note: Casting the item every time to talisman clutters the code.