When you play the card, you get to look at the top four cards of your deck, reveal a song from among them and then put it in your hand, placing the rest at the bottom in any order
Owls were shown first in the Owl Island Secluded Entrance card, revealing the secret Location but telling us very little else
Seeing as Summons in the actual Final Fantasy franchise only stick around for a few turns, having them represented as Sagas in Magic makes perfect sense
The options available are Amber/Amethyst, Ruby/Emerald, and Sapphire/Steel, all containing 60 pre-selected cards of the appropriate pairing that cover the essentials while including a few power players
And if you like reading cross-game strategy to sharpen your instincts, this quick read shows the same lesson in a different format: MTG Foundations Sleeper Is an Underrated Answer to a Problematic Archetype