As long as Omastar is your Active Pokémon, your opponent can't play Basic Pokémon or Evolution cards from his or her hand to evolve his or her Active Pokémon.
Spook
50
The Defending Pokémon can't retreat during your opponent's next turn.
Rarity:
Rare
Type:
Water
Poke#:
139
Number:
23
Subtype:
Stage 2 Pokémon
Energy Symbols:
C = Colorless =
D = Darkness =
Fr = Fire =
Ft = Fighting =
G = Grass =
L = Lightning =
M = Metal =
P = Psychic =
W = Water =