Dark Muk (TR 41). If the game ends via a poison knockout, the next turn still begins. Probably not important to fix but it might have larger implications.
Game starting
Game type: CAREER
Game format: Base-Gym (2000)
Battle started between Mt.gufo and Pidgeot!
Both players took 1 mulligans, but Pidgeot isn't finished yet. They will continue taking mulligans after Mt.gufo places an Active Pokémon (and Benched, if any).
Mt.gufo drew an extra card.
Mt.gufo drew an extra card.
Mt.gufo drew an extra card.
Mt.gufo drew an extra card.
Mt.gufo drew an extra card.
Mt.gufo drew an extra card.
Mulligan phase: Pidgeot took 3 additional mulligans
Coin flip result: TAILS
Pidgeot will start
Game setup complete
Between turns
Turn 1 begins
Pidgeot drew 1 card
Attached a Fighting Energy (G2 127) to Brock's Sandshrew.
Pidgeot played Bill.
Pidgeot drew 2 cards
Pidgeot played Misty's Wrath.
Put 2 cards to Hand
Gust Of Wind (BS 93) was discarded
Full Heal (BS 82) was discarded
Full Heal (BS 82) was discarded
Fighting Energy (G2 127) was discarded
Fighting Energy (G2 127) was discarded
Pidgeot played Computer Search.
Pidgeot has shuffled deck.
Pidgeot played Defender.
Defender is attached to Brock's Sandshrew
Brock's Sandshrew used Defense Curl
Coin flip result: HEADS
Brock's Sandshrew won't receive any damage next turn.
Between turns
Turn 2 begins
Mt.gufo drew 1 card
Mt.gufo played Computer Search.
Mt.gufo has shuffled deck.
Put Grimer onto bench
Attached a Grass Energy (BS 99) to Grimer.
Mt.gufo played Computer Search.
Mt.gufo has shuffled deck.
Mt.gufo played Energy Removal.
Fighting Energy (G2 127) was discarded
Defender (BS 80) was discarded
Between turns
Turn 3 begins
Pidgeot drew 1 card
Attached a Fighting Energy (G2 127) to Brock's Sandshrew.
Brock's Sandshrew evolved into Brock's Sandslash
Pidgeot played Item Finder.
Restored a Misty's Wrath to hand.
Pidgeot played Misty's Wrath.
Put 2 cards to Hand
Fighting Energy (G2 127) was discarded
Brock's Sandslash (G2 36) was discarded
Pluspower (BS 84) was discarded
Item Finder (BS 74) was discarded
Fighting Energy (G2 127) was discarded
Pidgeot played Computer Search.
Pidgeot has shuffled deck.
Pidgeot played Professor Oak.
Pidgeot drew 7 cards
Pidgeot played Brock's Protection.
Attached [Brock's Protection (G2 101)] to Brock's Sandslash
Between turns
Turn 4 begins
Mt.gufo drew 1 card
Attached a Grass Energy (BS 99) to Grimer.
Mt.gufo played Computer Search.
Mt.gufo has shuffled deck.
Mt.gufo played Professor Oak.
Mt.gufo drew 7 cards
Grimer evolved into Dark Muk
Mt.gufo played Item Finder.
Restored a Computer Search to hand.
Mt.gufo played Computer Search.
Mt.gufo has shuffled deck.
Mt.gufo played Switch.
Dark Muk is now active
Mt.gufo played Professor Oak.
Mt.gufo drew 7 cards
Mt.gufo played Pluspower.
Put Grimer onto bench
Mt.gufo played Professor Oak.
Mt.gufo drew 7 cards
Mt.gufo played Item Finder.
Restored a Pluspower to hand.
Mt.gufo played Pluspower.
Dark Muk used Sludge Punch
Brock's Sandslash is weak to GRASS
PlusPower +10
PlusPower +10
Dark Muk did 60 damage to Brock's Sandslash
Brock's Sandslash is now poisoned
Pluspower (BS 84) was discarded
Pluspower (BS 84) was discarded
Between turns
Brock's Sandslash got 10 damage due to poison
Brock's Sandslash was knocked out
Fighting Energy (G2 127) was discarded
Brock's Protection (G2 101) was discarded
Brock's Sandslash (G2 36) is no longer poisoned
Mt.gufo took one prize card.
Mt.gufo wins the game! No Pokémon left in play!
Turn 5 begins
Pidgeot drew 1 card
[Mt.gufo]: gg wp
Pidgeot has closed game view.