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.
When Esper
Terra enters the battlefield, its first chapter ability triggers, copying another Nonlegendary Saga you control and putting two to three lore counters on it.
The Saga tokens first through fourth chapter abilities trigger, as applicable. Resolve all triggers, and sacrifice the Saga token upon resolving the final trigger.
When the Saga token leaves the battlefield,
Resourceful Defense triggers, moving the lore counters from the Saga token onto Esper
Terra.
Esper
Terra's second, third and fourth chapter abilities trigger.
Resourceful Defense trigger, moving all counters from Esper
Terra onto any other permanent.
Resolve the
Terra, Magical Adept trigger, causing you to mill five cards and return up to one enchantment card from among them from your graveyard to your hand.
Repeat.
Notes
The chosen Saga must have no more than four chapter abilities. Once you have infinite white mana, you can instead copy any other permanent besides the chosen Saga, and move counters to and from Esper
Terra using
Resourceful Defense's ability.
Results
Infinite LTB.
Infinite ETB.
Infinite colored mana.
Infinite self-mill.
Infinite token copies of nonlegendary enchantments you control.