Robaran Mercenaries

• WOTC Official Reminder Textofficial rules
  Vigilance — Attacking doesn't cause this creature to tap.

• WWizards of the Coast2022-09-09
  Official Ruling
  If Robaran Mercenaries gains an activated ability that's normally linked to a non-activated ability of the creature it came from, the ability Robaran Mercenaries has isn't linked to any ability.
• WWizards of the Coast2022-09-09
  Official Ruling
  If Robaran Mercenaries gains an activated ability that's normally linked to another activated ability of the creature it came from, those two abilities Robaran Mercenaries gains are linked for as long as that creature remains on the battlefield.
• WWizards of the Coast2022-09-09
  Official Ruling
  The costs of activated abilities that Robaran Mercenaries gains must be paid as normal.
• WWizards of the Coast2022-09-09
  Official Ruling
  Activated abilities contain a colon. They're generally written "[Cost]: [Effect]." Some keywords are activated abilities and will have colons in their reminder text.

Rulings via Scryfall