Pokémon
Stage 1 — Grass
English Oracle text
Mass Explosion (Grass, Colorless) 20x
Does 20 damage times the total number of Koffings, Weezings, and Dark Weezings in play (Apply Weakness and Resistance.). Then, this attack does 20 damage to each Koffing, Weezing, and Dark Weezing (even your own). Don't apply Weakness and Resistance.
Stun Gas (Grass, Grass, Grass) 20
Flip a coin. If heads, the Defending Pokémon is now Poisoned; if tails, the Defending Pokémon is now Paralyzed.
HP 60
Evolves from Koffing
Weakness Psychic ×2
Retreat 1
Researchers have observed these Pokémon reproducing in industrial waste sites.Printed text is unavailable in this catalog snapshot.