I recently got it on my Entei and I dont know if it is good or not. Also, what are the odds?
When a Pokémon has the Pokérus, it gains double the effort values from battling (e.g., fighting a Magikarp will give two Speed EVs, rather than one). Effort points gained from Vitamins and Feathers are not doubled. The infected Pokémon can infect other Pokémon with the virus for a period of one to four days. However, the Pokérus timer can be delayed by several methods, such as by placing the infected Pokémon in a PC Box.
Pokérus has a 3 in 65,536 (or approximately a 1 in 21,845) chance of being generated on one of the player's Pokémon after a battle, making it rarer than encountering or hatching a Shiny Pokémon. If any of the player's Pokémon are infected, the Pokérus may spread among Pokémon in the player's party after any battle.
The Pokérus may spread if an infected Pokémon is in the player's party after a battle. The Pokérus may only spread to a Pokémon directly adjacent to an already infected Pokémon, and only if they have never had Pokérus before. Eggs may catch the Pokérus like any other Pokémon.
The number of days before a Pokémon will be cured of the Pokérus can vary from one to four days. Once this time has passed, the Pokémon becomes cured and will be immune to the virus in the future. The Pokémon still gains double effort values when cured.
It’s good. And much rarer than a shiny. If this is something that appeases you, you can keep one Pokemon with Pokerus in your PC to hold the virus forever, and then you can pass it onto more Pokemon in your party.
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Basically it just doubles the amount of EVs you get for defeating a Pokémon.
It’s been in every game since gen 2 and is actually more rare than finding a shiny
and on top it spreads to your other Pokemon in your party
also it is good and very rare!
