It's "and/or," not "and/or/nor." Barring something else affecting it, it will always be a Turtle, an Elephant, or both
Test of Talents #59 Strixhaven: School of Mages Change Version Test of Talents Instant Counter target instant or sorcery spell
For example, if it has three age counters on it, you may put four cards from your graveyard on the bottom of your library and two cards from your opponent's graveyard on the bottom of their library
What are the payment options
While popularity and visuals play a role in this card's pricing, rarity also plays a role, as this card is incredibly difficult to find in good condition
Once played, it allows you to gain health for each other creature summoned while Trostani is on the battlefield