Poison Egg

The Poison Egg spawns Poison-type Pokémon around you for 5 minutes. Catch as many as you can to charge the egg and improve your final reward. 
 Spawns 
 The following Pokémon will spawn around you during the egg: 
 
 Diglett 
 Bulbasaur 
 Weedle 
 Ekans 
 Zubat 
 Oddish 
 Yamask (Valorian) 
 Venonat 
 Bellsprout 
 Tentacool 
 Grimer 
 Grimer (Alolan) 
 Koffing 
 Spinarak 
 Spinarak (Valorian) 
 Qwilfish 
 Qwilfish (Hisuian) 
 Venipede 
 Trubbish 
 Skrelp 
 Mareanie 
 Varoom 
 Glimmet 
 Toxel 
 Croagunk 
 Skorupi 
 
 Final Reward Pool 
 If you don't hit the Legendary odds, you'll receive one of these Pokémon: 
 
 Clodsire 
 Glimmora 
 Revaroom 
 Overqwil 
 Sneasler 
 Dragalge 
 Garbodor 
 Nidoqueen 
 Nidoking 
 Crobat 
 Venusaur 
 Weezing (Galarian) 
 
 Legendary Rewards 
 If you hit the Legendary odds, you'll receive one of: 
 
 Iron Moth 
 Poipole