Pokemon Trader (BS 77). It's no longer clear to the opponent what card was put into the deck.
------------------Begin Game Log------------------
The game is about to start
Type: QuickPlay
Format: Base–Fossil
Battle begins between Vultales and shinycarletto!
Coin flip []: TAILS
shinycarletto will start
Game setup complete
Between turns
Turn 1 begins
shinycarletto drew 1 card
shinycarletto played Bill.
shinycarletto drew 2 cards
Attached a [R] Energy to Magmar
DEBUG: Magmar's Current_Energy_Cards: [[R] Energy]
shinycarletto played Pokemon Trader.
Put 1 card to Deck
Put [Magmar (FO 39)] to Hand
shinycarletto has shuffled deck.
Put Magmar onto bench.
Magmar used Smokescreen
Smokescreen effect is activated.
Magmar did 10 damage to Doduo
Between turns
Turn 2 begins
Vultales drew 1 card