Brock's Onix (21/132) [Gym Heroes 1st Edition] SM05 Set: Base Set 2 Type:

Set: Base Set 2 Type: Psychic Rarity: Holo Rare Retreat cost: Colorless

Set: Structure Deck: Machine Reactor Card type: Field Spell Rarity: Common Both players can Normal Summon "Ancient Gear" monsters for 1 less Tribute

in addition to your Normal Summon/Set

Set: Ancient Sanctuary Card type: Effect Monster Rarity: Super Rare Attack: 300 Defense: 2000 Any Battle Damage your opponent takes when he/she attacks this monster is doubled

you can Special Summon this card (from your hand)

Brock's Onix (21/132) [Gym Heroes 1st Edition] SM05 Set: Base Set 2 Type:Set: Gym Heroes 1st Edition Type: Fighting Rarity: Rare Retreat cost: Colorless,Colorless