Totem of Pain

You infuse your totem with three charges of harmful energy, which it retains for up to 1 hour, and you can place this totem anywhere within 30 feet of you, where it remains until the duration expires or all charges are expended.  Once all the charges are extinguished, either by use or recasting this spell, the totem instantly returns into your possession.  There is no limit to the distance you can be from the totem for this to occur, though you must be on the same plane of existence.  If you ever lose this totem, you must recreate one before you can cast this spell again.

Whenever a creature hostile towards you moves to within a 10 foot radius of this totem for the first time on a round, or if a creature starts its turn there, the totem reaches out with its harmful energy, expending one charge and inflicting 1d8 force damage.  

You can only have one totem of the same name active at a time.  If you cast this totem spell again while you have any other active totems of the same name, the original totem will instantly loose its magic and go dormant, returning to your possession.  

Casting this spell everyday on the same spot for one year makes the totem permanent. The charges will still need to be replenished once used up, though the totem remains in place after all charges are exhausted. 

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the number of available charges increases by one for each spell slot level above 2nd.