You can only activate this card when/while ➨ Activate only when/while.
On your side of the field ➨ you control
Offer 1 monster on your side of the field as a Tribute ➨ Tribute 1 monster on your side of the field ➨ Tribute 1 monster
Special Summon "X" to your side of the field ➨ Special Summon
When this card is Normal/Special Summoned successfully ➨ When/If this card is Normal/Special Summoned
During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent ➨ If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent.
The/Your Deck is then shuffled ➨ Then shuffle the/your Deck ➨ (removed)