We should have been better, we can be better, and we will be better. The affected cards are Invoke Prejudice, Cleanse, Stone-Throwing Devils, Pradesh Gypsies, Jihad, Imprison, and Crusade
This is because it's a 5-White 5/5 creature with a reanimation effect and an ability that puts +1/+1 counters on it every time damage is dealt to it, which is also prevented
Fallout brought its own hype but a promo card like War Room has a not-typical rarity letter: What is the H Rarity
The other deck is Might and Magic, an Amethyst/Steel deck that features RotFs new keyword, Resist, and its major new deck building mechanic, bouncing your own cards back into your hand
If this worked with any creature, it would be pretty heavily played