Terra, Magical Adept // Esper Terra | The Apprentice's Folly

Cards

Terra and
The Apprentice's Folly on the battlefield (
Terra without summoning sickness).

Activate
Terra, Magical Adept by paying ({4} magic symbol) ({R} magic symbol) ({G} magic symbol) and tapping it, exiling it and returning it to the battlefield as Esper
Terra and with a lore counter on it.
Esper
Terra triggers, creating a copy of
The Apprentice's Folly and causing it to enter the battlefield with a lore counter on it.
The Apprentice's Folly's first ability triggers, creating a token copy of Esper
Terra that isn't legendary with a lore counter on it.
When the Esper
Terra token enters the battlefield, its first chapter ability triggers, creating a token copy of itself with haste and four lore counters on it.
When the Esper
Terra token enters the battlefield, its first, second, third and fourth chapter abilities trigger.
Resolve the first and second trigger, creating token copies of any nonlegendary enchantment you control.
Resolve the fourth trigger, causing you to add ({W} magic symbol) ({W} magic symbol) ({U} magic symbol) ({U} magic symbol) ({B} magic symbol) ({B} magic symbol) ({R} magic symbol) ({R} magic symbol) ({G} magic symbol) ({G} magic symbol) and exile the Esper
Terra token.
Resolve the third trigger, creating a token copy of the Esper
Terra token created in step 4 with haste and four lore counters on it.
Repeat from step 5.

You can choose to have the tokens enter with one to three counters instead to get infinite creature tokens with haste.