when there are none left, you get to cast the card
When the card declares an attack, the player can send a monster from the hand or deck to the graveyard, and for every Normal Monster in the grave, Exodius gains 1,000 ATK
If you put one of them onto the battlefield without casting it, you get the front face (the secret identity face in this set)
So we would only draw with an established board presence and we're using mana to draw into threats rather than play them
(or, if you prefer, when do I plan to get mine?) I think the trend here is quite clear, even if the drop rate is relatively high at 1 in 500 for your specific fetchland
Sai, Master Thopterist is the most flexible among legendary creatures with this play pattern, as there are plenty of strong artifact-centric strategies that synergize with its effects for building an army or drawing cards as the situation warrants