Devastating Onslaught

• WWizards of the Coast2025-07-25
  Official Ruling
  The tokens copy exactly what was printed on the original permanent and nothing else (unless that permanent is itself copying something else; see below). They don’t copy whether that permanent is tapped or untapped, whether it has any counters on it or Auras attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on. If the permanent is a Vehicle, the copies are not crewed. If it is an Equipment, the copies are not attached to any creature.
• WWizards of the Coast2025-07-25
  Official Ruling
  If the copied permanent is copying something else, then the tokens enter as whatever that permanent copied.
• WWizards of the Coast2025-07-25
  Official Ruling
  Any enters abilities of the copied permanent will trigger when the tokens enter. Any “as [this permanent] enters” or “[this permanent] enters with” abilities of the copied permanent will also work.
• WWizards of the Coast2025-07-25
  Official Ruling
  If the copied permanent is a token, the tokens that are created copy the original characteristics of that token as stated by the effect that created the token.

Rulings via Scryfall