[20] On each player's turn, following a set phase order, they draw a card, tap their lands and other permanents as necessary to gain mana to cast spells, engage their creatures in a single attack round against their opponent who may use their own creatures to block the attack, and then complete other actions with any remaining mana
Because you're transforming an existing creature into Archfiend of the Dross, the opponent's Archfiend doesn't enter the battlefield, so it doesn't get any oil counters
I was so impressed that a community came together to cheer on somebody just for opening a seemingly simple card
Hexproof creatures are still vulnerable to board wipes, but given that Snakeskin Veil can be played as an instant , you can use it to shut down a targeted spell first, and hope that your opponent doesn't have the mana or cards in hand to follow it up with anything else
Locations can always be challenged, and you dont need to wait for them to be exerted as they cant