- The rules reference on Experience states "When purchasing a higher level version of a card with the same title, the investigator may choose to ‘upgrade' that card by paying only the difference in experience (to a minimum of 1) between the two cards and removing the lower level version of the card from his or her deck." No part of this passage allows you to "side-grade"from one level 4 Strange Solution to another level 4 solution for 0 experience. In fact, you would have to pay 1 xp to swap the level 4 strange solution out for a level 0 strange solution, then upgrade that for 4 xp.
이 카드는 오직 캠페인 기록지에 "당신은 용액의 정체를 알아냈다"라고 적혀 있을 경우에 한해, '기이한 용액(정체불명)' 카드를 향상시켜 당신의 덱에 추가할 수 있습니다.
소모품을 1개 소비합니다: 당신이 위치한 장소에 있는 조사자 한 명의 피해를 2 회복합니다.
4 xp to spend 5 actions healing 8 dmg.
At the time of writing this review, out of all the versions, this is the only Strange Solution that includes the rules clarification that says:
This tells you everything you need to know.
Sorry, and better luck next time you try to use Shrewd Analysis.