Focusing on the playable (and believe me, there are unplayable ones) options, we have Cloudchaser Kestrel, the more frequently seen Eight-and-a-Half-Tails, Govern the Guildless and Blind Seer (Who I assume works of the principle of I cant see which colour this is
Sultai Sleeves: Blue Black Green Mana - Realm Guard MTG Sleeves - 100 ct Sultai Card Sleeves for MTG with Blue, Black, and Green Mana Symbols are perfect for competitive control players or "casual" control fans
There's something truly satisfying about the play pattern of dropping this card on your opponent, keeping your incubate token safe for their next turn, then transforming for two mana and beating down with a gigantic Phyrexian
Ophiomancer is also a great stand alone defensive card and a huge tax on removal
For instance, a card featuring a less iconic Pokmon may lose its appeal as collectors gravitate toward more sought-after characters like Charizard or Pikachu