■ [Cast Cost] [Discard a card from your hand] ■ If the card discarded from your hand by this card's [Cast Cost] is ‹Legend World›, you gain 1 life and draw a card. If the card is ‹Star Dragon World›, put the top card of your deck into your gauge, and destroy a size 2 or less monster on your opponent's field. You may only cast "Lua Nova" once per turn.