I am worried about this effect.
i really wnat to get this effect, but what if I am perfomring it and just so happens that somone that is catholic walks by and this could get me into some trouble.
Remember, you don't have to present it as a stigmata and such...
There are soooo many ideas you can work with with these effects.
Use your head
Quick presentation Idea: you talk about how you have too much iron in your blood, and to prove it, you take out a magnet and hold it over your hand, then the blood starts to appear.
You have a connection to drawings. Have spectator trace your hand. Have them prick the drawings palm. (doesn't have to be voodoo)...