This is designed for cards to be placed standing up either bare or sleeved
Karn, the Great Creator might be controversial if your group leans heavily on artifact mana sources, but I actually have it here for the other two abilities: making artifacts into creatures lets Satya copy them, and the normally-dead wish activation can actually be used to loop Gontis Aether Heart, assuming you can proliferate enough loyalty and energy counters to keep that going
Like most Magic: The Gathering cards, the value of Rambling Possum depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Outlaws of Thunder Junction)
Wall of Omens is one of those cards that might not have an incredible range of appeal, and wont fit in every deck
Mons Goblin Raiders (1): Priced around $17, this was one of those cards I stuffed into my deck because I wanted to have all possible creatures represented, even though at this time, sorcery and instants were much more powerful
Given this precon directly combats against so many black effects in other decks, if you choreograph your move at sorcery speed, you leave yourself extra vulnerable to a mill or recursion deck flinging your glorious chosen card straight into your graveyard