Being a Lesson doesn't impact what the card does, but because it has that subtype, it can be cast for just one mana if you control Uncle Iroh, a Creature that makes your Lesson spells cost one mana less
[15] Her next job came through a contract from Marchesa to assassinate the ghostly King Brago
Kaya, Ghost Assassin (Alternate Art Foil) from Conspiracy: Take the Crown Details Kaya, Ghost Assassin (Alternate Art Foil) is a Mythic Rare in the set Conspiracy: Take the Crown.
Then there are the Final Fantasy Through The Ages cards, featuring classic artwork from across the series, including from legendary artist Yoshitaka Amano and character designer Tetsuya Nomura
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I may have been the guy that you are talking about on Instagram