Lucky Egg (2 Diamonds rarity) is the #B4b-371 card from the Deluxe Pack: Mega set in Pokémon TCG Pocket. Lucky Egg can be obtained from Deluxe Pack: Mega Booster Pack in the Deluxe Pack: Mega Set.
“If the Pokémon this card is attached to is Knocked Out by damage from an attack from your opponent's Pokémon, draw cards until you have 5 cards in your hand.”
PocketCards.net
