It is probably a great choice in certain known metas as well but in a low curve limited setting it is just a bit too much risk
We have friendly Ajani above, and vengeful Ajani below
What is the rarity of this Castform card
Phasing your board out while leaving you immune to life total changing is the ultimate safe button
Untapping and re-activating artifacts is easy as pie in EDH, with enough mana rocks and a Dramatic Reversal stapled onto an Isochron Scepter (plus all seven Bobbleheads), we can just roll the dice 50,000 times until we roll seven 6s
This means that all permanents retain their other types in addition to being artifact creatures.) This combination not only causes all kinds of shenanigans, the least of which is most certainly not the fact that all lands die because of being creatures with 0/0 power/toughness (unless there's something else increasing their toughness), but it also allows many interesting interactions with non-creature permanents that are not normally possible (because most of the "interesting" interactions usually target creatures and nothing else.) Just to mention one of the numerous possibilities, take for example the situation where Clone enters the battlefield as a copy of Garruk Relentless