It's worth noting that, when you put the three lore counters on copies you make with Esper Terra's first three chapters, you'll also trigger the first three chapters all at the same time
There are multiple cards in color with Ashiok that are going to love to use those exiled cards for various powerful effects, like Wasteland Strangler or Ulamog's Nullifier
(In most cases, this set of cards will contain just one card.) The Creation of Avacyn's second and third chapter abilities refer only to those cards, not those of any other The Creation of Avacyn
On top of that, you have the ability to transform it into Ifrit, Warden of Inferno, an obscene summon that kills a creature right away and eventually transforms back and draws you more cards
But you can downgrade JTMS quite a lot and still end up with a good Magic card
However, when you give creature decks a tool to fight against the powerful draw engines in older formats, I cant help but enjoy it