mtg card backs Ultra Pro One Touch Classic Back – Video Game Trader LLC Magic: the Gathering Card Backing

Visual examples below

The term "defending player" in the myriad rules (or any other ability of an attacking creature) refers to the player the creature with myriad was attacking or the controller of the planeswalker it was attacking at the time the ability resolves

If a creature enters the battlefield as a copy of a face-down creature (or if a token is created that's a copy of one), that copy has the same characteristics as the face-down creature (in this case, it's a 3/3 creature with the two abilities and no other characteristics), even though the copy is face up

Card Name Mana Cost Type Legendary Creature Avatar Rarity Uncommon rules Text Flying Particle Beam - When Cloud of Darkness enters, target creature an opponent controls gets -X/-X until end of turn, where X is the number of permanent cards in your graveyard

Given all that, this is my current decklist

These versions also appear to be the rarest of the three, at least based on the prices vendors are selling them for