Megarock Dragon [TLM-EN015] Ultimate Rare BT1-045 (Quick Effect): You can Tribute

(Quick Effect): You can Tribute 1 DARK monster

You can only use each effect of "Duoterion" once per turn

it can attack up to that many times during each Battle Phase

also place this card on the bottom of the Deck if it leaves the field

1 Pokemon Sobble promo card

Megarock Dragon [TLM-EN015] Ultimate Rare BT1-045 (Quick Effect): You can TributeSet: The Lost Millennium Card type: Effect Monster Rarity: Ultimate Rare Attack: ? Defense: ? This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by removing from play a Rock Type monster(s) in your Graveyard. The original ATK and DEF of this card become the number of Rock Type monsters you removed from play when you Special Summoned this card x 700 points.