Squidnapper

• WWizards of the Coast2019-11-12
  Official Ruling
  If Squidnapper leaves the battlefield before its triggered ability resolves, you won’t gain control of the target creature at all.
• WWizards of the Coast2019-11-12
  Official Ruling
  Pay no attention to any other card in this set using the word “ransom” when determining how Squidnapper’s ransom ability works.
• WWizards of the Coast2019-11-12
  Official Ruling
  If a card with a ransom ability loses that ability, it has no ransom cost. No player may pay its ransom cost.
• WWizards of the Coast2019-11-12
  Official Ruling
  Paying a ransom cost to end an effect is a special action. The card’s owner may pay that cost any time they have priority, and players can’t take actions in between the time the player announces their intent to pay and the time the card returns to the zone from which it came.

Rulings via Scryfall