Black Skull Dragon of Unity & Spell Shattering Sword Both cards bolster the Light and Darkness Ritual strategy
Houndoom 57/146 is a Uncommon card and belongs to Uncommon cards of Legends Awakened series

4 Starfield Mystic 2 Paradise Druid 2 The Birth of Meletis 4 Wolfwillow Haven 2 Dryad of the Ilysian Grove 4 Setessan Champion 4 Archon of Sun's Grace 1 Nylea, Keen-Eyed 4 Calix, Destiny's Hand 1 Cavalier of Dawn 3 Elspeth Conquers Death 1 Castle Ardenvale 8 Plains 6 Forest 4 Temple Garden 4 Temple of Plenty 2 Fabled Passage 4 Banishing Light 2 Sky Tether 4 Eidolon of Obstruction 4 Thrashing Brontodon 3 Shatter the Sky 1 Nylea, Keen-Eyed 1 Elspeth Conquers Death To play a successful enchantress deck, you need a few things: you need something that draws you cards off of playing enchantments (this is the "enchantress" part of the deck, named after Argothian Enchantress which is still the engine in Legacy versions), you need a way to make your enchantments cheaper, you need enchantments to stay alive in the early game because games involving enchantress decks tend to be very grindy, and you need a way to actually win the game
which simply skips to the next turn, negating the cost of Ride
With the addition of milling, getting a LIGHT and a DARK in the graveyard is much more common
You can find out more about creating Basri from Wizards