Mist Archfiend [FOTB-EN064] Secret Rare Champion Pack 8 but they cannot declare an

but they cannot declare an attack and their effects are negated

You cannot Normal Summon or Set the turn you Special Summon this card

your opponent cannot activate any Spell/Trap Cards until the end of the Damage Step

This card can attack your opponent's Life Points directly even if there is a monster on your opponent's side of the field

Mist Archfiend [FOTB-EN064] Secret Rare Champion Pack 8 but they cannot declare anSet: Force of the Breaker Card type: Effect Monster Rarity: Secret Rare Attack: 2400 Defense: 0 You can Normal Summon this card without Tributing a monster. If you do this, during the End Phase it is destroyed and you take 1000 damage.