Dwarven Confluencer

• WWizards of the Coast2024-11-08
  Official Ruling
  Dwarven Confluencer’s last ability creates a token that’s a copy of the card Mana Confluence in the Oracle card reference. Official text for Mana Confluence can be found using the Gatherer card database at Gatherer.Wizards.com (but the reminder text is basically all you need).
• WWizards of the Coast2024-11-08
  Official Ruling
  For many playtest cards, you’ll need to make a generous assumption that basic game rules would be updated to allow them to work. The Mystery Booster 2 Playtest Card Notes section (reproduced here in individual Gatherer rulings) provides guidance for fitting these cards into the existing rules structure.
• WWizards of the Coast2024-11-08
  Official Ruling
  Playtest cards use a modified version of game symbols, such as and . These modified symbols should be treated as the standard symbols during play.
• WWizards of the Coast2024-11-08
  Official Ruling
  Playtest cards aren’t legal for play in any tournament format other than Mystery Booster Limited formats. On the other hand, we expect they will spice up a wide variety of non-tournament games (as long as everyone’s on the same page about using them!).

Rulings via Scryfall