Once the creature does die, Glistening Oil goes to the graveyard, then it returns to your hand per its ability
For some analysis on these cards, let's turn to our resident Magic expert Greg Burke, who describes them thusly: "The card is a 4 cost enchantment that when played allows the player to draw 3 cards, and then discards 2
The island walk is just a nice bit of icing on the cake that ensures a good number of people you face will find this entirely unstoppable with dorks
These are all strong abilities, and Nahri is a good starting point for the best Equipment commanders in MTG
Heres a breakdown of every slot and the pull chances when cracking packs
Most shockingly of all, not only is this drop full of really cool cards, it's actually still in stock, 18 hours later