- Note: For accurate card stats, see infobox to the right; the one below is for illustrative purposes only.
- See this subject on The Witcher wiki: Skjall
- Gwent Update: Sep 29, 2017 Patch: Now Agile (was Siege).
- Gwent Update: Aug 29, 2017 Patch: Skjall Power changed from 6 to 5. Ability rework; Deploy: Play a random Bronze or Silver Cursed Unit from your Deck. Removed Veteran: 1. No longer timer-based ability. Added Cursed and Heymaey Tags.
- Gwent Update: May 24, 2017 Patch: Ability rework; Veteran 1. After 2 turns, at the end of your turn, convert this Unit's current Power into base Power. No longer Agile (Siege). Power changed from 3 to 6. "Craven Revived token was removed and transformed into a standalone card - "Necromancy".
- Gwent Update: Feb 20, 2017 Patch: Fixed Skjall's tooltip to: lose 2 strength instead of 3.
- Gwent Update: Feb 6, 2017 Patch: Strength changed from 4 to 3.; Ability changed to: "Lose 3 strength at the start of your turn. When removed from the battlefield, spawn Craven Revived on the same row".
- Gwent Update: Dec 2, 2016 Patch: Skjall is now Agile.