Heliosphere Dragon [PRIO-EN004] CommonSet: Primal Origin Card type: Effect Monster Rarity: Common Attack: 0 Defense: 1900 While your opponent has 4 or less cards in their hand and this card is the only monster you control, your opponent cannot declare an attack. Once per turn, if you control a Level 8 Dragon Type monster: You can make this card become Level 8 until the end of this turn.