Gastly (SF 62). I shouldn't be forced to switch when using Trick Gas.
------------------Begin Game Log------------------
The game is about to start
Type: QuickPlay
Format: 2010 (DP–UL)
Battle begins between douevenswitchbro and GrayAnt213!
Coin flip [Opening Flip]: TAILS
GrayAnt213 will start
Game setup complete
Between turns
Turn 1 begins
GrayAnt213 drew 1 card
Attached a [P] Energy to Ralts
DEBUG: Ralts's Current_Energy_Cards: [[P] Energy]
Ralts used Future Sight
Future Sight rearranged Ralts's owner's deck
Between turns
Turn 2 begins
douevenswitchbro drew 1 card
Attached a [P] Energy to Gastly
DEBUG: Gastly's Current_Energy_Cards: [[P] Energy]
Expert Belt (AR 87) is attached to Gastly
douevenswitchbro played Bebe's Search (MT 109).
Put 1 card to Deck
douevenswitchbro has shuffled deck.
Put [Spiritomb (AR 32)] to Hand
douevenswitchbro has shuffled deck.
Put Spiritomb (AR 32) onto bench.
Gastly used Trick Gas
Expect Belt +20
Ralts is weak to PSYCHIC
Gastly did 40 damage to Ralts
Spiritomb is now active
Between turns
Turn 3 begins
GrayAnt213 drew 1 card
GrayAnt213 played Roseanne's Research (SW 125).
GrayAnt213 has shuffled deck.