Simplify the following text for a Grade 3 native English-speaking person.
Original: When the devil tells Faust to sign the pact with blood , Faust complains that the devil does not trust Faust 's word of honor . In the end , Mephistopheles wins the argument and Faust signs the contract with a drop of his own blood .
Simplified: Faust signs the pact with his blood .