In this example, a player has a Plasma Pokemon in the active position (for example, Snorlax with 130HP). The player evolves an Eevee on the bench to Umbreon, with the Dark Shade ability giving Snorlax +20HP to 150HP.
On the next turn, the opponent evolves a Trubbish to Garbodor with the Garbotoxin ability. This cancels the Umbreon ability. Would it mean that the Snorlax loses the +20HP boost and goes back to 130HP as well?
On the next turn, the opponent evolves a Trubbish to Garbodor with the Garbotoxin ability. This cancels the Umbreon ability. Would it mean that the Snorlax loses the +20HP boost and goes back to 130HP as well?