Seeing people freak out about Minimorph is pretty funny, especially because the current meta is so obviously bad for it. What does this card do vs all the various Sivir Ionia decks going around? All their units that are bigger than 3/3 have spell shield and a 3/3 still accepts buffs like Shaped Stone and Twin Disciplines for burst damage just fine. Draven Ez often has draws where it uses all of its efficient 3 drops and Tri-Beam or Sentry to remove blockers for tons of damage, again all of their units already were around 3/3 size this doesn't help at all vs that. This card strait up upgrades most the units in Discard and Pirates. People act like transforming Dreadway is good but you still have to deal with the likely flipped GP that it fetched. It isn't even all that good vs some of the old school control decks like FTR and TLC.
Not saying the card is bad and won't see play, but these sorts of effects are always colossally overrated by card game communities. (I remember people losing their shit over Ravenform in MTG when it was first spoiled and how it was going to break Blue, card wasn't even all that good in limited) It's easy to imagine the obvious best-case scenario for it like transforming a Lee or Anivia, but a ton of decks don't have good targets like this and people act like spending 6 whole mana to still leave behind a fairly sizable creature is something that you're allowed to get away with vs most decks in Runeterra.