M Beedrill-EX (XYP XY158). After my opponent Mega Evolved their Beedrill into Mega Beedrill, it let me draw a card for turn then immediately went back to my opponents turn. It let them draw a new card for the turn as well. I'm not sure if this is for all Mega Pokemon, but this was the case for Mega Beedrill.
Game starting
Game type: QuickPlay
Game format: Expanded
Battle started between Kondoleo and PizzaTime!
Coin flip result: TAILS
PizzaTime will start
PizzaTime took a mulligan. They will continue taking mulligans after Kondoleo places an Active Pokémon (and Benched, if any).
Mulligan phase: PizzaTime took 1 additional mulligans
Kondoleo drew 1 extra cards.
Game setup complete
Between turns
Turn 1 begins
PizzaTime drew 1 card
Attached a Aurora Energy (SSH 186) to Tapu Lele-GX.
M Gardevoir-EX (STS 79) was discarded
PizzaTime played Cherish Ball.
PizzaTime has shuffled deck.
Put [Dedenne-GX (UNB 57)] to Hand
PizzaTime has shuffled deck.
Dimension Valley is now in play.
Dedenne-GX has used Dedechange
Dimension Valley (PHF 93) was discarded
Field Blower (GRI 125) was discarded
Prism Energy (NXD 93) was discarded
PizzaTime drew 6 cards
Put Dedenne-GX onto bench
PizzaTime played Battle Compressor.
Mewtwo & Mew-GX (UNM 71) was discarded
Vileplume-GX (CEC 4) was discarded
Noivern-GX (BUS 99) was discarded
PizzaTime has shuffled deck.
PizzaTime played Rescue Stretcher.
Put [Mewtwo & Mew-GX (UNM 71)] to Hand
Put Mewtwo & Mew-GX onto bench
Between turns
Turn 2 begins
Kondoleo drew 1 card
Attached a Grass Energy (EVO 91) to Beedrill-EX.
Dimension Valley (PHF 93) will be discarded as Virbank City Gym (PLS 126) is played.
Dimension Valley (PHF 93) was discarded
Virbank City Gym is now in play.
Kondoleo played Trainers' Mail.
Put [Net Ball (LOT 234)] to Hand
Kondoleo has shuffled deck.
Kondoleo played Net Ball.
Kondoleo has shuffled deck.
Put [Rowlet & Alolan Exeggutor-GX (UNM 214)] to Hand
Put Rowlet & Alolan Exeggutor-GX onto bench
Kondoleo played Professor's Research.
Grass Energy (EVO 91) was discarded
Professor's Research (SSH 201) was discarded
Grass Energy (EVO 91) was discarded
Virbank City Gym (PLS 126) was discarded
Energy Recycler (BST 124) was discarded
Kondoleo drew 7 cards
Put Bulbasaur onto bench
Kondoleo played Trainers' Mail.
Put [Ultra Ball (PLF 122)] to Hand
Kondoleo has shuffled deck.
Kondoleo played Ultra Ball.
Cynthia (UPR 148) was discarded
Cynthia (UPR 148) was discarded
Kondoleo has shuffled deck.
Put Pheromosa-GX (UPR 140) to hand
Kondoleo has shuffled deck.
Put Pheromosa-GX onto bench
Grass Energy (EVO 91) was discarded
Beedrill-EX retreated.
Rowlet & Alolan Exeggutor-GX is now active
Rowlet & Alolan Exeggutor-GX used Super Growth
Kondoleo has shuffled deck.
Beedrill-EX evolved into M Beedrill-EX
Between turns
Turn 3 begins
PizzaTime drew 1 card
Kondoleo has shuffled deck.
Between turns
Turn 4 begins
Kondoleo drew 1 card
Rowlet & Alolan Exeggutor-GX used Super Growth
Kondoleo has shuffled deck.
Bulbasaur evolved into Ivysaur
Kondoleo has shuffled deck.
Ivysaur evolved into Venusaur
Kondoleo has shuffled deck.
Between turns
Turn 5 begins
PizzaTime drew 1 card
Virbank City Gym (PLS 126) will be discarded as Dimension Valley (PHF 93) is played.
Virbank City Gym (PLS 126) was discarded
Dimension Valley is now in play.
Muscle Band (XY 121) is attached to Mewtwo & Mew-GX
Put Mewtwo & Mew-GX onto bench
PizzaTime played Professor Juniper.
Professor Juniper (PLB 84) was discarded
Float Stone (BKT 137) was discarded
Mewtwo-EX (BKT 164) was discarded
PizzaTime drew 7 cards
Attached a Aurora Energy (SSH 186) to Mewtwo & Mew-GX.
Jirachi-GX (UNM 79) was discarded
Aurora Energy (SSH 186) was discarded
Tapu Lele-GX retreated.
Mewtwo & Mew-GX is now active
Mewtwo & Mew-GX used Distort
Muscle Band does +20
Mewtwo & Mew-GX did 70 damage to Rowlet & Alolan Exeggutor-GX
Between turns
Turn 6 begins
Kondoleo drew 1 card
Put Beedrill-EX onto bench
Attached a Grass Energy (EVO 91) to M Beedrill-EX.
Kondoleo played Boss's Orders.
Dedenne-GX is now active
Rowlet & Alolan Exeggutor-GX used Super Growth
Kondoleo has shuffled deck.
Beedrill-EX evolved into M Beedrill-EX
Between turns
Turn 7 begins
PizzaTime drew 1 card
Kondoleo has shuffled deck.
Between turns
Turn 8 begins
Kondoleo drew 1 card
Kondoleo played VS Seeker.
Put Professor's Research (SSH 201) to hand
Put Pheromosa-GX onto bench
Kondoleo played Professor's Research.
VS Seeker (PHF 109) was discarded
Professor's Research (SSH 201) was discarded
Kondoleo drew 7 cards
Attached a Grass Energy (EVO 91) to Pheromosa-GX.
Kondoleo played Trainers' Mail.
Put [Net Ball (LOT 234)] to Hand
Kondoleo has shuffled deck.
[PizzaTime]: Wait, why is it skipping my turn???
Kondoleo played Hypnotoxic Laser.
Dedenne-GX is now poisoned
Coin flip result: HEADS
Dedenne-GX is now asleep
Between turns
Asleep coin flip result: TAILS
Dedenne-GX is still asleep
Dedenne-GX got 10 damage due to poison
Turn 9 begins
PizzaTime drew 1 card
[PizzaTime]: You mega evolved right?
[Kondoleo]: yep
[PizzaTime]: It makes me draw a card then immediately goes back to your turn.
Fighting Fury Belt (BKP 99) is attached to Mewtwo & Mew-GX
PizzaTime wins the game! Opponent has surrendered
Kondoleo has closed game view.