Abuelo, Ancestral Echo

• WOTC Official Reminder Textofficial rules
  Ward — Whenever this permanent becomes the target of a spell or ability an opponent controls, counter it unless that player pays [cost].

• WWizards of the Coast2023-11-10
  Official Ruling
  If another effect causes one of the returned permanents to become a creature and sets its base power and toughness as it does so, that creature will have that power and toughness; it won't be 1/1. Notably, crewing a Vehicle does not set its power and toughness, so a Vehicle will remain a 1/1 if you crew it.
• WWizards of the Coast2023-11-10
  Official Ruling
  An Equipment that's also a creature can't be attached to anything. You can activate its equip ability, but it won't become attached.
• WWizards of the Coast2023-11-10
  Official Ruling
  If a double-faced card is exiled this way, it will return with its front face up, no matter which face was up when it left the battlefield.
• WWizards of the Coast2023-11-10
  Official Ruling
  The exiled card will return to the battlefield at the beginning of the next end step even if Abuelo, Ancestral Echo is no longer on the battlefield at that time.
• WWizards of the Coast2023-11-10
  Official Ruling
  If a token is exiled this way, it ceases to exist and won't return to the battlefield.
• WWizards of the Coast2023-11-10
  Official Ruling
  An artifact creature card or enchantment creature card returned this way will have base power and toughness 1/1.

Rulings via Scryfall