The one scary thing they can do is Back to Nature, which is shockingly beatable because the rest of their deck is so bad against yours, but if you see that card you might want to swap the Aphemias back for the Cartouche of Solidarity and Karametras Blessing rather than lean on more enchantment creatures
if were playing against control, the opponents Supreme Verdicts become much worse, and when it comes down to it, Doom Engine is a card we are perfectly fine trading with other large creatures if we have to
I think Donphan has a lot of potential in the current standard format now
The Extended Art version of The Millennium Calendar is only available in the Lost Caverns of Ixalan Variants booster set, which is a premium set with a limited print run
The problem now is: how do we take more prizes after that
Green creatures often have trample , making them hard to block effectively