Not to mention that blessing pens is not all that difficult. Blessings can generally be quite simple: burning a white candle for purity and giving a simple prayer to any personal deities along with charging it with your own positive energy would be fit for a simple blessing. :)
thats not that hard to do, affecting watches and what not, shadow you do raise a intresting question about paradoxies. i doubt something like that would happen. also ment to say earlyier that stopping time is not possible, slowing yes, fastforeward yes. stopping no.