First of all, I don't believe in God, and I don't believe in Satan, so this is purely hypothetical and a question to those who believe.
If Satan exists, wouldn't he be the one tempting you with eternal good life in a very nice place? Wouldn't he be the one trying to win the "propaganda war" with the good God by having a Holy Book or Scripture or Bible or Quran or Torah written to tell people what they need to do in order to get to this nice place he promises us?
Satan contested The Eternal God's rule. It is all played out in the mind of each and every person. Satan stands in God's place in the mind. Own thoughts, conversations and behavior are acted out from a desire, with prompting and tempting in the mind. Own personal power is taken up for own gratification and this is a place of comfort.
The mind is full of all manner of thoughts that are not actually seen for what they are. Each person is a kind of slave to play out what is observed in all human interaction and endeavor.
Satan projects and magnifies a personality apart from another leaving an impression of its presence that is remembered by others. A bonding of familiarity holds most because each has similar power. Even when people are separated some distance there is still mental bonding that can be apparent in the thoughts. Thoughts produce feelings and every one at some time uses their own skill to get the reaction they want in another person.
Some have more power and they manipulate and control. Some have less power and they are picked on. It is not seen for what it is. Every one lives and breathes in the kingdom of Satan and no one is immune.