1 Zeox is correct, your attribute does not change BUT2 If it was to change your attribute it would still apply, according to the rulebook after you play a card it goes to your used pile IMMEDIATELY, so even if you play a card for Haos and then change to Aquos it doesn't matter, as the card is in your used pile and cannot be DQ'ed as it was already played when you were Haos and then removed from the battle. Just sayin'.