Rofl. Ronster, I know you're being sarcastic and it made my day. x bows x
Anyways, on the topic of not being sarcastic, the hardest reagent to get would probably be Amber, but even that isn't too hard. All it takes is some skill with gardening and a bit of luck. (I've already gotten some and my luck is virtually nonexistent.)
Scrap iron! I can find a lotus or buy pearls much easier that scrap iron, I'm not kidding! Sometimes I think someone is messing with us just so he can have a good laugh with all the wizards running around MB, changing realms and get frustrated
Amber for those who hate, too lazy, or prefer other things in gardening like myself. Sunstone for my own personal experiences. I hear Black lotus for most people. Finally mist wood it was a dead end.