Ilúvatar? No, no... you would say that he was not there "from start of times"? Also he didn't take part in Morgoth's treachery (he couldn't obviously, since the treachery was against him). And finally, I don't think Ilúvatar will "die by his own hands". The subject is still the same during all the riddle.
I suggest you all to try something "smaller" for a change