Catch-Up Mechanic [Unknown Event]

When this creature enters, choose one. If an opponent has at least 5 more life than you, choose any number instead—
• Put two +1/+1 counters on another target creature or Vehicle.
• Return target artifact card from your graveyard to your hand.
• Look at the top five cards of your library. Reveal an artifact card from among them and put it into your hand. Put the rest on the bottom in a random order.