1. The Love Potion: Oberon orders Puck to find a specific flower called "love-in-idleness" and squeeze its juice onto the eyelids of a sleeping Titania, the Queen of the Fairies. This love potion will make Titania fall in love with the first person she sees upon waking.
2. Deception of Demetrius: Oberon instructs Puck to use the love potion on Demetrius, one of the four young lovers in the play. Puck, however, mistakenly applies the potion to Lysander, causing him to fall in love with Helena instead of his intended lover, Hermia. This mistake sets in motion a series of romantic entanglements.
3. Transformation of Bottom: Oberon also commands Puck to transform the head of Bottom, a weaver and member of the Mechanicals, into that of a donkey. This transformation is meant as a punishment for Bottom's arrogance and to cause confusion among the lovers and the Athenian nobles who are watching their play.
4. Restoration of Order: In the final scenes of the play, Oberon instructs Puck to reverse the transformations he has caused and restore the lovers to their original pairings. He also orders Puck to reunite Titania and Oberon, resolving their conflict and bringing harmony back to the fairy world.
Throughout the play, Puck obediently carries out Oberon's commands, using his magical abilities to cause chaos, confusion, and ultimately, resolution among the characters in "A Midsummer Night's Dream."