This question already has an answer here:
Just reading up on the new sangan errata which is;
If this card is sent from the field to the Graveyard: Add 1 monster with 1500 or less ATK from your Deck to your hand, but you cannot activate cards, or the effects of cards, with that name for the rest of this turn. You can only use this effect of "Sangan" once per turn.
So this new Errata states that you cant use the effect of the monster you added until the turn after you use this effect.
To my understanding this means that if you have sangan in an exodia deck and you have both legs and both arms in your hand then if you use the sangan effect to add the head then you wont win until your next turn. Or would the effect of exodia overrule this effect?
And also if you have the head already and three of the other pieces in your hand when you use sangan to add the last one it doesnt have an effect because only the head has the effect and because you havent added the head to your hand then the win condition can still be activated. Or would you still have to wait a turn because the pieces are listed in the effect of the head?