Hmm. Well, here are the parts to its effect, I believe. I haven't dueled in ages, so I may have forgotten a few:
Basic God Effects:
-Can only be normal summoned by tributing 3 monsters.
-Normal summon can't be negated
-Spell/trap/effect can't be activated when it's summoned.
Then the effects:
-Gains attack and defense of the totals of the original monsters tributed.
-If it is special summoned, it has zero attack points.
-If it is special summoned, it goes to grave and End Phase.
-Pay 1000 life points to destroy any monster on the field, even if it has an effect that resists destruction by effect.
-Pay all of your life points, except one point, and 'The Winged Dragon of Ra' gains as many attack points as you payed.
And that's all I remember. If it is something along those lines, then it's probably right. Good luck!
~Aster Phoenix