Chaos Gym (G2 102). Chaos gym flips before play requirements are checked. In this case, I tried to play gold berry while all of my pokemon in play had a tool attached. Flipping heads kept the card in my hand, until I flipped tails when it was discarded.
Game starting
Game type: Career
Game format: Rocket-LC (2002)
Battle started between blason24 and Mt.gufo!
Mt.gufo took a mulligan. They will continue taking mulligans after blason24 places an Active Pokémon (and Benched, if any).
blason24 drew an extra card.
blason24 drew an extra card.
blason24 drew an extra card.
blason24 drew an extra card.
Mulligan phase: Mt.gufo took 2 additional mulligans
Coin flip result: HEADS
blason24 will start
Game setup complete
Between turns
Turn 1 begins
blason24 drew 1 card
[blason24]: You play 4 focus bands?
blason24 played Misty's Wrath.
[Mt.gufo]: yeah
[Mt.gufo]: its a wip
[Mt.gufo]: I'm also wanting to cut dark vaporeon
Put 2 cards to Hand
Koga's Beedrill (G2 9) was discarded
Energy Stadium (N4 99) was discarded
Koga's Weedle (G2 82) was discarded
Cleffa (N1 20) was discarded
Koga's Kakuna (G2 47) was discarded
[blason24]: You should add team rocket's meowth
[Mt.gufo]: but since noone plays feraligatr fire decks have no baad matchups
blason24 played Professor Elm.
blason24 has shuffled deck.
blason24 drew 7 cards
Put Koga's Weedle onto bench
Attached a Grass Energy (G1 129) to Koga's Weedle.
Elekid has used Playful Punch
Coin flip result: HEADS
Scyther got 20 damage
Between turns
Turn 2 begins
Mt.gufo drew 1 card
blason24 disconnected, waiting 15 seconds before ending game.
Focus Band (N1 86) is attached to Scyther
Chaos Gym is now in play.
blason24 reconnected.
Attached a Recycle Energy (N1 105) to Scyther.
Between turns
Turn 3 begins
blason24 drew 1 card
Put Koga's Weedle onto bench
Elekid has used Playful Punch
Coin flip result: TAILS
Between turns
Turn 4 begins
Mt.gufo drew 1 card
Chaos Gym coin flip result: HEADS
[Mt.gufo]: ohh thats a bug
Chaos Gym coin flip result: HEADS
Chaos Gym coin flip result: HEADS
Chaos Gym coin flip result: TAILS
Chaos Gym prevents the effect of Gold Berry (N1 93)!
However, Gold Berry (N1 93) cannot be played by Chaos Gym because it's put into play
Gold Berry (N1 93) was discarded
Attached a Darkness Energy (N1 104) to Scyther.
Scyther evolved into Dark Scizor
Chaos Gym (G2 102) will be discarded as Narrow Gym (G1 124) is played.
Chaos Gym (G2 102) was discarded
Narrow Gym is now in play.
[blason24]: the game as been glitchy lately
blason24 disconnected, waiting 15 seconds before ending game.
blason24 reconnected.