Wither need power up, i have an idea

Wither is really easy to defeat, all of them in java and bedrock version, i swear they are so easy to defeat. The idea for the wither power up is, first they are need fly up more high in first half round, the ai need upgrade for the 3 head to lock different target not just one, virus that make edible animal such as cow, sheep, chicken.. etc. Meat get poisonus and not edible.. and it can spread one to another animal. I think just that for now.. thank you:D