Staffs are designed to be used over monsters/items/terrain, not yourself. You have 3 different items to apply magic status to yourself: potions, scrolls and pendants. This is a design decision :)
Maybe I will add a warning if you target yourself to avoid waste a charge.
Polymorph is a gambling staff, sometimes you will get a weak monsters. My recommendation here is to use poly only over overpowered monsters, so you transform them into a weak monsters.
Graveyard needs a rework. There are a lot of graveyars from players that only played 1 time, wasting space. I will make graveward bigger and add a condition of having at least 5 deaths to have your own tombstone. Remember you can press Ctrl+direction to autorun.