Ok so i used to run a server way back when with a ton of mods. but idiot me didnt back up all of them so i was wondering if you guys could help me find them again. i do not know the names but i do remember what they exactly do. the first one i need help finding had multiple effects. i could increase a creepers blast radius, killing a skeleton had a chance to spawn another without a bow, getting killed by a zombie would spawn a zombie wearing the things you had equipped. and it was all easy to edit within the config file. next one up allowed me to make blocks disappear by using redstone based items(levers buttons ect.) another one allowed me to have multiple worlds on the same server. and for the final one i need help finding allowed me to create a elevator using iron blocks and a button with a sign (i think). If you guys could help me find these it would be a huge help thanks.