A Creeper can create an explosion but you will also die in the process. For example, when you turn into a Bee, you can fly but water will kill you. When you turn into another creature, you will receive their perks, sometime their perks can be a disadvantage so use them wisely. In order to morph, you only need to type a command.
Instead of just being a human character, you can now change into a different mob at will. Gamingbarn’s Morph Data Pack (1.19, 1.18.1) introduces a new mechanic into Minecraft that allows you to transform into other creatures.