This means they can be used with no drawback as you hit the Doom threshold, allowing for a potentially powerful increase in advantage for the investigators on the eve of the Agenda advancing
Even with thick acrylic cases, your booster box takes up less space than an Elite Trainer Box
You can only activate Map tokens at sorcery speed, it can only target a creature you control, and they have to be sacrificeable and tappable
The amount of damage Jet's first ability deals is calculated only on resolution of the ability
However, as one-off cards that you're hoping will save you for a turn at some point, you can usually do better than generic fog effects
While you control this card, Special Summoned by the effect of a "Valkyrie" card, all face-up monsters your opponent controls lose 1000 ATK