What part of speech is the phrase his power and

The phrase "his power and" is incomplete and doesn't constitute a full part of speech on its own.

Here's why:

* It lacks a noun or pronoun: We need something to follow "and" to complete the thought. For example: "his power and influence," "his power and wisdom."

* It's part of a larger phrase: "His power and" would likely be the beginning of a noun phrase or a prepositional phrase, depending on what comes after it.

To determine the part of speech, we need the complete phrase.