House: Success depends on forethought, dispassionate calculation of probabilities, accounting for every stray variable. For dice-rolling cards in MTG, were stacking RNG on top of the 99-card singleton deck RNG
This can be done anytime you have priority, even after blockers are declared, so if they block your mysterious 2/2 with a 3/3, but you turn it face up so that your attacker becomes a 6/6, your creature will defeat the 3/3 no problem
This expansion was built around providing support for this Mew card with incredibly strong Pokmon
Lovecraft, The Shadow Over Innsmouth
If you do, transform Thousand Moons Smithy
Get too many Draft Boosters and not enough Set Boosters, you run out of what the customer wants to buy, which also costs you money