A guaranteed source of mana in the command zone is quite the card and is one of the reason Marwyn is on the stronger side of Elf Commanders
All cards in a Collector Booster are foil, with 10% of boosters containing a special Halo Foil Rare or Mythic Rare, with under 1% of packs containing a Foil Serialized card
Hades Infernal Schemer is the gold standard for non-destructive removal because he doesnt banish a character, he places them facedown into the opponents inkwell
While horrors aren't nearly as supported as more popular creature types, Mind Flayarrrs includes several niche reprints for it, including Herald's Horn, Reflections of Littjara, and Hullbreaker Horror
This ones great because it lets you see the most cards without secondary assistance from something like a shuffle effect
Arthur's setting here, being in a library filled to bursting with books, compliments Arthur, and the backlighting on his hair helps keep him in the foreground