Kagha, Shadow Archdruid

• WWizards of the Coast2022-06-10
  Official Ruling
  Once you begin to cast the spell, losing control of Kagha won't affect it. You can finish casting it as normal.
• WWizards of the Coast2022-06-10
  Official Ruling
  You must pay all costs when casting a spell this way.
• WWizards of the Coast2022-06-10
  Official Ruling
  If you play a land or cast a permanent spell from your graveyard using another permission, it won't count as the "once during each of your turns" for Kagha's effect.
• WWizards of the Coast2022-06-10
  Official Ruling
  You must follow the normal timing rules of the card you play from your graveyard.
• WWizards of the Coast2022-06-10
  Official Ruling
  If you play a land or cast a permanent spell from your graveyard via Kagha, and then have a new Kagha come under your control in the same turn, you may do so again that turn.

Rulings via Scryfall