Metal Core Barrier (2 Diamonds rarity) is the #B4b-210 card from the Deluxe Pack: Mega set in Pokémon TCG Pocket. Metal Core Barrier can be obtained from Deluxe Pack: Mega Booster Pack in the Deluxe Pack: Mega Set.
“If this card is attached to 1 of your Pokémon, discard it at the end of your opponent's turn. The [M] Pokémon this card is attached to takes −50 damage from attacks from your opponent's Pokémon.”
PocketCards.net
