Axebane Ferox

• 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].
• WOTC Official Reminder Textofficial rules
  Deathtouch — Any amount of damage this deals to a creature is enough to destroy it.

• WWizards of the Coast2024-02-02
  Official Ruling
  Once you've announced that you're casting a spell, players can't take actions until you've finished doing so. Notably, opponents can't try to remove cards from your graveyard to stop you from collecting evidence.
• WWizards of the Coast2024-02-02
  Official Ruling
  If you can't exile enough cards to meet or exceed the required mana value, you can't choose to collect evidence at all.

Rulings via Scryfall