Dragon Egg

The Dragon Egg spawns Dragon-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: 
 
 Dratini 
 Bagon 
 Gible 
 Deino 
 Tyrunt 
 Goomy 
 Jangmo-o 
 Dreepy 
 Tatsugiri 
 Axew 
 Noibat 
 Frigibax 
 
 Final Reward Pool 
 If you don't hit the Legendary odds, you'll receive one of these Pokémon: 
 
 Dragonite 
 Kingdra 
 Flygon 
 Salamence 
 Garchomp 
 Hydreigon 
 Dragalge 
 Tyrantrum 
 Goodra 
 Goodra (Hisuian) 
 Kommo-o 
 Dracozolt 
 Dracovish 
 Dragapult 
 Noivern 
 Haxorus 
 Altaria 
 Baxcalibur 
 Garchomp (Valorian) 
 
 Legendary Rewards 
 If you hit the Legendary odds, you'll receive one of: 
 
 Eternatus 
 Rayquaza 
 Rayquaza (New Form)