When Terra enters, mill five cards. Put up to one enchantment card milled this way into your hand.
Trance — , : Exile Terra, then return it to the battlefield transformed under its owner's control. Activate only as a sorcery.
(As this Saga enters and after your draw step, add a lore counter.)
I, II, III — Create a token that's a copy of target nonlegendary enchantment you control. It gains haste. If it's a Saga, put up to three lore counters on it. Sacrifice it at the beginning of your next end step.
IV — Add , , , , and . Exile Esper Terra, then return it to the battlefield (front face up).
Flying
Build an enchantment-heavy WUBRG midrange/value deck that uses Terra's mill ETB to dig for key enchantments, then flip her with the Trance ability to fuel a powerful Saga chapter trigger that copies your best nonlegendary enchantment three times in a row (each copy with up to three lore counters if it's a Saga). You grind value and explosive ramp before transforming back into a 3/3 flyer to do it all again.
Five-color identity opens the entire enchantment pool and best-in-class ramp/fixing
Copying Sagas with three lore counters can instantly resolve a Saga's final chapter for huge payoffs
Esper Terra's chapter IV generates ten mana (WWUUBBRRGG) for explosive turns
Mill-on-enter plus enchantment recursion gives repeatable card advantage at only 3 mana
Flip/return loop keeps re-triggering the enters effect and resetting the Saga
Demanding five-color mana base needs heavy fixing to function
Flipping costs and ties up Terra, so she's slow to come online
Enchantment-removal and graveyard hate hit both halves of the strategy
Token copies are sacrificed each end step, so the value is transient unless built around
Front-face Terra has little board impact beyond a 3/3 flyer until you commit mana
Turns your enchantment-heavy build into a card-draw machine alongside Terra's recursion.
Tighten the mana base with original duals, fetchlands, and enchantment ramp (Utopia Sprawl, Wild Growth, Smothering Tithe) so the flip cost is reliably payable. Add high-impact Sagas whose final chapters win or generate massive value when copied, plus enablers like Doubling Season and Sanctum Weaver. Cap it with protection (Heroic Intervention, Teferi's Protection) and a compact combo finish so your grindy engine has a deterministic close.