Enter into

In which we see insistence upon the unnecessary preposition “into”, seeing as the act of entering something necessarily involves going into it.

Nonetheless, the resourceful draftsperson will insist on entering into legal agreements (and might correct your draft if you neglect to say so). Indeed, one with a higher dan might even chain his or her prepositions together and tether them to a passive, and speak reverently of a transaction “entered into under this agreement”.