Cards with those abilities can't be transformed any other way, so you won't even get a "whenever this creature transforms" trigger
Commander Compare & Contrast Zedruu, the Greathearted with Emma Handy Nahiri, the Lithomancer with Anthony Alongi Feldon of the Third Path with The Professor Commander Strategy Why You Should Commander Like Me War of the Spark Storrev, Devkarin Lich, Nicol Bolas Tribal, Feather, the Redeemed, Massacre Girl, Neheb, Dreadhorde Champion Ravnica Allegiance The Haunt of Hightower, Teysa Karlov, Prime Speaker Vannifar, Rakdos, the Showstopper, Nikya of the Old Ways, Lavinia, Azorius Renegade, Judith, the Scourge Diva SCG CON Winter 2018 Yuriko, the Tigers Shadow, Grothama, All-Devouring
This also makes Persist a great support card, since it only targets non-legendary creatures
For example, take While using hybrid mana in this way helped solve the design issue, we discovered that this type of mana cost caused a lot of confusion
A green 13/13 for ten mana, Krosan Cloudscraper has no combat abilities to speak of and is little more than a large body on the battlefield
Youll more likely be stuck taking out your opponents one at a time with cards like Crackle with Power and Banefire