If only your opponent controls a monster: Special Summon 1 F.A. monster from your hand, and if you do, increase its Level by 3 until the end of this turn. If this card is in the GY and you control no cards in your Field Zone: You can banish this card from the GY; activate 1 F.A. Field Spell directly from your hand or GY. You can only use this effect of F.A. Overheat once per turn.