- 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: Mardroeme (gwent card)
- Gwent Update: Oct 31, 2017 Patch: Will Heal, instead of Resetting. Removed Special Tag.
- Gwent Update: Aug 29, 2017 Patch: General change; Doomed is no longer a tag, but an ability in card's description. Added Organic Tag.
- Gwent Update: May 24, 2017 Patch: Added Doomed Tag.
- Gwent Update: March 23, 2017 Patch: Mardroeme: Mutagen now resets target unit to a base strength increased by 2 relative to its initial value.
- Gwent Update: Feb 6, 2017 Patch: Mutagen will now be able to target units on both sides of the battlefield.; Mutagen's buff changed from +4 to +3.
- Gwent Update: Jan 5, 2017 Patch: Mutagen will not longer allow an auto-win if a target is not chosen.