This creature enters with two +1/+1 counters on it. {1}, Discard a card: Put a +1/+1 counter on this creature. Remove two +1/+1 counters from this creature: Draw a card.
{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put this artifact on top of its owner's library.
{T}: Add {C}. {1}: this land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly-Worker creature gets +1/+1 until end of turn.