If this card is sent from the field to the GY: 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.
You can use these cards to send Sangan to the graveyard during your opponent's turn so that you can activate the effect of the monster you searched.
Sangan can be used to search out any part of Exodia from your deck. Use him in combination with Emissary of the Afterlife amd Downbeat/Transmodify to quicken the search.