2 Mox Amber - Mythic Rare Schematic - $34.32 Taking the top slot for the most valuable cards from The Brothers War is Mox Amber, again, but this time as the Retro Artifact Frame version
Thanks to its triggered ability, any deck built around it should have plenty of cards that make your opponents draw, and those same cards should be balanced out with cards that punish your opponents for drawing cards
Tovolar, Dire Overlord // Tovolar, the Midnight Scourge was first released in the set Innistrad: Midnight Hunt, illustrated by Chris Rahn & Chris Rahn
I enjoy free spells in my Syr Gwyn deck, given how mana hungry it is, and Boros Charm is the best way to make board wipes one-sided
It won't teach you the Disney Lorcana rules, but it does give you access to all the best Disney Lorcana cards - without the need for a brick-and-mortar trading card game store