Terra, Magical Adept // Esper Terra | Estrid's Invocation

Cards

Terra and
Estrid's Invocation on the battlefield (
Terra without summoning sickness and
Estrid's Invocation not copying anything).

Activate
Terra 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.
Esper
Terra enters with a lore counter on it, triggering its first chapter ability, creating a token copy of
Estrid's Invocation with haste, which will enter as a copy of Esper
Terra with haste and with one to four lore counters on it.
Put the oldest Esper
Terra into your graveyard due to the legend rule.
The Spark Double token's chapter abilities will trigger according to how many lore counters were placed on it.
Resolve the first
Estrid's Invocation token trigger, creating a token copy of
Estrid's Invocation with haste, which will enter as a copy of Esper
Terra with haste and with one to four lore counters on it.
Repeat from step 3.

You can stack additional Esper
Terra triggers and resolve them later for more tokens and mana.