Rooms actually trigger eerie twice once when the first door is unlocked on the initial enter of the Room, and again when you unlock the final door
Vronos, Masked Inquisitor's last ability causes the target artifact to lose any other creature types it has
This card basically combos with any of your repeated damage dealers to let your creatures grow at the same rate that they get dealt damage, which can very quickly get out of hand
According to legend, should a l'Cie fail to fulfil their duty, otherwise known as their Focus, they turn into a Cie'th, a creature damned to wander the world unliving and undying
But the more time Ive spent analyzing the generals, the more I realize they proved to make a huge impact on Commander across a wide swath of archetypes, intended or not