Mineru, Sage of Spirit

When Mineru, Sage of Spirit enters the battlefield, create a 0/0 colorless Construct
artifact creature token with "This creature gets
+1/+1 for each artifact you control."
Tap an untapped artifact you control:
Add {u}.
{5}: Shuffle your library, then exile the top card.
Until end of turn, you may play that card without paying its mana cost.