While both of these mechanics do feature a handful of interesting options, I think that the majority of them will ultimately have the same outcome
Though you might be able to get by with Arcane Sanctum instead of Glacial Fortress in your UW deck doing so is one more obstacle in your path, and winning 7 or 8 rounds of swiss in a row followed by a top 8 is hard enough without extra obstacles
While Goring Ceratops will have to attack to enable this effect, and it only last until the end of turn, its nevertheless utterly devastating
It has one card I have finally banned, as with '98, that being Grim Monolith
face-up and face-down creatures refers to creatures with the Morph ability, which allowed a select few creatures to go face down and become 2/2 creatures with no abilities
Professor Hojo is a shoe-in for any green deck that runs equipment, ever