Goodra, Sliggoo & Goomy Revealed From S8 Fusion Arts

Goodra

Ability: Gooey Room
As long as this Pokémon is in the Active position, whenever your opponent attaches an Energy from their hand to one of their Pokémon, they flip a coin. If tails, that Energy isn't attached and gets discarded instead.

WP - Buster Tail 120

ToineLay: I'm pretty confident the wording means the Energy was discarded but not attached, so your opponent still keeps their attachment for turn and can try attaching another Energy if they have one.

Sligoo

C - Melt 20

WP - Body Slam 50
Flip a coin. If heads, your opponent’s Active Pokémon is now Paralyzed.