Hound of Griselbrand [Avacyn Restored] Box Topper the equipped monster's original ATK

the equipped monster's original ATK becomes 2400

except "Fire King Avatar Arvata"

Set: Tournament Pack 2 Card type: Effect Monster Rarity: Rare Attack: 1150 Defense: 900 You can substitute this card for any 1 Fusion-Material Monster

Set: Ghosts from the Past Card type: Normal Trap Rarity: Ultra Rare Tribute 1 "Hieratic" monster to target 1 card your opponent controls

When this card is Fusion Summoned

Hound of Griselbrand [Avacyn Restored] Box Topper the equipped monster's original ATKSet: Avacyn Restored Type: Creature Elemental Dog Rarity: Rare Cost: {2}{R}{R} Double strike Undying (When this creature dies, if it had no +1 +1 counters on it, return it to the battlefield under its owner's control with a +1 +1 counter on it.)