I have a loosely related question. Since a cleric must be able to present their holy symbol to channel energy, what if a caster changed it's appearance? Would it no longer work as them presenting their holy symbol?
Honestly, I am thinking of the ever notorious Prestidigitation. I know it can't interrupt a caster but if you were to change the shape of say an ankh into a rough sphere it wouldn't directly be affecting their cast right? But it would no longer be the right shape to represent their faith. Or, even if it were a different shape, would it still work as it is still the Same object?