Worse condition foil Extended Art copies are available for as little as $10, but these are hardly ideal
Handily, this helps you solve Case of the Crimson Pulse, which in turn lets you draw two cards every upkeep to keep Confinement around
Other decks that might potentially be interested in a card like this are Azorius Control, Sultai Control, Bant Midrange and any sort of Grixis or Dimir control deck that ends up appearing with the new set
Haliya is the latest in a long line of Soul Warden-style effects, except she has the added bonus of gaining you life for each artifact that enters, too
This allowed them to function identically mechanically while making their drawback clearer and allowed more flexible card design as Wizards could print defenders that didnt need to be walls, like Wingmantle Chaplain
You get lots of control over which sagas go away and which abilities you repeat