Funny. I somehow expected a response like that. That's why I kept this link here handy.
http://en.wikipedia.org/wiki/God_Cards
Now, explain to me where the heck it says that they're immune to magic cards? I see the following bits of info.
This card cannot leave play due to the effect of a spell card.
This card is unaffected by most trap cards or monster effects (those that do affect them, which are certain continuous effects, last only 1 turn). The effects of a God Card of higher hierarchy do affect this card.
Control of this card cannot change.
The effects of spell cards that do not cause this card to leave play last for only one turn.
This card cannot be destroyed in battle by a God Card of lower hierarchy, unless multiple attack simultaneously.
Now, since this does not cause the monster to leave play, so it says that it would last for one turn, which I have used. Ergo, the move is allowed, unless you can prove otherwise. If you can't then you're toast.
😎