Beyond the Brave

You cannot Special Summon from the Extra Deck, except "Number" Xyz Monsters. You can only use each of the following effects of "Gorgonic Umbral Horror" once per turn. If you control no monsters, or all monsters you control are "Umbral Horror" monsters: You can Special Summon this card from your hand, and if you do, add 1 non-Rock "Umbral Horror" monster from your Deck to your hand. Can be treated as 2 materials for the Xyz Summon of a "Number" Xyz Monster that requires 3 or more materials.

Gorgonic Umbral Horror

2014 Mega-Tin Mega Pack

When this card is Normal Summoned: You can make all Rock-Type monsters you control become Level 3.

Gorgonic Cerberus

When you Normal Summon a Rock-Type monster: You can Special Summon this card from your hand.

Gorgonic Gargoyle

If you control a "Gorgonic Ghoul": You can pay 300 LP; Special Summon this card from your hand. You can use the effect of "Gorgonic Ghoul" up to twice per turn.

Gorgonic Ghoul

If this card is destroyed by battle and sent to the Graveyard: The ATK of the monster that destroyed it becomes 0. You can banish this card from your Graveyard, then target 1 Set Spell/Trap Card your opponent controls; that target cannot be activated this turn. Your opponent cannot activate the targeted card in response to this effect's activation.

Gorgonic Golem

2 Level 3 Rock-Type monsters
Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 face-up monster your opponent controls; its ATK becomes 0, and if it does, its effects are negated. These effects last until the end of this turn. Once per turn: You can target 1 monster on the field with 0 ATK; destroy it.