The phrase "are the power of" can be substituted with various synonyms to add emphasis and variation to your writing. For example, "possess the strength of," "hold the authority of," "wield the influence of," and "command the might of" all convey a similar message. Other synonyms that can be used include "dominate," "govern," "rule," and "guide." It is important to choose the right synonym depending on the context and tone of your writing. Experimenting with different synonyms can also add depth and nuance to your language and make your writing more engaging.