For example, if you control two Prismatic Undercurrents, you'll be able to play three lands during each of your turns
Preconstructed is a subcategory of Constructed in which players don't build their own decks, but instead select from a set of prebuilt decks provided in the MTG Arena event
We could go on and on about the two slashes of Birds of Paradise, the many, many incorrect artist attributions, the artist attributions that misspell the artist's name, the U instead of the blue mana symbol on Phantasmal Forces or the BBB instead of three black mana symbols on Demonic Hordes, the incorrect mana cost on Orcish Oriflamme, the fact that the casting cost on Cyclopean Tomb is straight up missing entirely, or Unsummons creature are CARD ed text
Wall of Mourning is currently less than $1.00
Despite entering tapped, their utility makes them an easy inclusion in control decks and those with greedy mana bases alike