Maha, Its Feathers Night

• 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 Coast2024-07-26
  Official Ruling
  Maha’s last ability overwrites all previous effects that set those creatures’ base toughness to specific values. Any toughness-setting effects that start to apply afterward will overwrite this effect.
• WWizards of the Coast2024-07-26
  Official Ruling
  Effects that modify a creature’s power and/or toughness, such as the effect of Overprotect, will apply to the creature no matter when they started to take effect. The same is true for counters that change its power and/or toughness and effects that switch its power and toughness.

Rulings via Scryfall