See, Lessons dont do anything on their own, theyre just a spell subtype attached to sorceries and instances
"Do this only once each turn" lets you choose whether or not to create the appropriate number of 2/2 black Zombie Mutant creature tokens as the triggered ability resolves
Absent green, it's just unplayable
Twilight Sparkle is thematic for a "group hug" deck, which means that you're going to give your opponents a lot of opportunities to draw cards and yourself a lot of opportunities to get Treasure
Our first take functioned like a copy spell, essentially you could copy any cheap spell (defined originally as mana value two or less) in Standard
Yeah, it's sorcery-speed and doesn't exile like Solitude does, but it should still find plenty of small utility creatures to pick off and double strike is a very powerful keyword that scales if you increase its power or add combat triggers like Sword of Fire and Ice to the mix