FCA cards are legal in Commander, Legacy, and Vintage, and each card is also legal in any other format where its already legal (e.g., Lightning Bolt is Modern-legal)
The Wizards Play Network app again shares a spoiler card with us, this time the Conspiracy Incendiary Dissent, which begins the game face-down and requires you to secretly name a card
If your life total is brought to 0 or less at the same time that a Devil token is dealt lethal damage, you lose the game before its ability goes on the stack
The bottom line is, unless there are items or other on-board threats that require ink usage each turn, your opponent may not have a great use out of the ink to begin with
Blossoming Tortoise can get back what it wants, not this
Your partys HP and MP will be restored between battles, and any party members who have been knocked out for fewer than three turns will be revived