Its design was actually finished in 2014, but the schedule couldnt allow for its release until three years later
However, Liliana should have discarded their entire hand already, so it's a pretty unlikely scenario that your opponent will have an answer
The Clue tokens represent a lot of card advantage, but a creature that spews artifacts is useful in other ways, especially alongside cards like Reckless Fireweaver
Skirk Prospector, Mogg War Marshal, Goblin Matron, Goblin Warchief and Goblin Ringleader made up for quite a powerful mana and card advantage engine
Problem is, those situations wont be that easy to manufacture This is definitely a build around, as youre going to really need a critical mass of counter nonsense to really take advantage of it
Costing five generic and two white, it has the landfall ability to return a nonland permanent from your graveyard to your hand