Gravekeeper's Cannonholder (DR1-EN014) - Dark Revelation Volume 1 Unlimited

Offer 1 card that includes Gravekeeper''s in its card name on your side of the field as a tribute to inflict 700 points of Direct Damage to your opponent''s Life Points. However, you cannot offer this card or another Gravekeeper''s Cannonholder with this card''s effect. Monsters used for a Tribute Summon or that are offered as Tributes due to other cards'' effects are excluded.