are all cards in mtg arena MTG: Reviewed Mtg Arena Only Cards

Callous Oppressor made attacking and blocking nearly impossible for an opponent if they didn't name wisely when it came into play

It's lighter on the rarity side, which I think led to people seeing this as an open Block

1 Traditional foil character land 2 Traditional foil regular frame cards

To break even at this price, you'd need to hit a serialized card, but there are some really expensive ones you could pull - from a serialized One Ring worth up to $7,500, to a Last March of the Ents worth $4,000

Rooms Here's an expansion on enchantments: rooms are two cards that can be unlocked and only take up one slot in the decklist

Again, the range is huge, and different vendors seem to have variable definitions around what qualifies