Deity yoga is a practice in Buddhism where you imagine and connect with a god or goddess. It's like playing make-believe, but for grown-ups!
First, you choose a deity that you like and want to connect with. Then, you imagine that you are that deity, like putting on a costume. You try to think and act like that deity, as if you were really them.
By doing this practice, you hope to learn from the wisdom and compassion of the deity. You may also feel closer to the divine and more connected to the world around you.
It's important to remember that this is just a practice, and doesn't mean that the deity is actually there with you. It's more like a way to use your imagination to help yourself get better at being kind and wise.