So, I am building a custom map, and in some puzzles you have to recover a lever from a mob to open a door. A friend told me that I should use MCEdit to give the mob the lever. Now, here's my question. How exactly do you do that in MCEdit? Thanks in advance!
You don't need to put the item in the held slot. The advantage of putting it there is that it allows you to fully gear the mob, the disadvantage is that you can't give them a weapon, and the player knows which mob has the lever. If you want the lever to be invisible you can put it on any of the other 4 slots, and set the drop rate to whatever percentage you want with the filter. 100% for just one, some other percent if you want it to be a small grind to get.