Megarock Dragon [TLM-EN015] Ultimate Rare Magic 2014 It has "Sacrifice this creature:

It has "Sacrifice this creature: Add {C}

The air was filled with the cracks and snaps of flesh hardening as the new sliver joined the battle

Set: Secret Lair Drop Series Type: Legendary Enchantment Creature — God Rarity: Mythic Cost: {2}{W}{U} Indestructible

Set: Foreign Black Border Type: Artifact Uncommon Cost: {1} You have no maximum hand size

Megarock Dragon [TLM-EN015] Ultimate Rare Magic 2014 It has "Sacrifice this creature:Set: 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.