Though she'd recently gone down in value, as new decks are made for Fabled and experiments are happening with some of the options available for Sapphire, her ability, What Did I Do, allows her to quest for four lore when her Strength is 10 or more
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You could even discover into a card like Etali's Favor, which would then let you start chaining discovers
There are multiple cards that care about the number of creatures you control such as Riona Heartilly and Snow Villiers to encourage you to go into Selesnya if you get them in your pool
A research team headed by Kyohei Yamane was sent to the island, and discovered a giant radioactive footprint on the island, with a Trilobite embedded in it
You need lands and a threat regardless of the matchup and are going to be constrained on mana