The reason why Merisiel is god tier is because of her Evasion. IMO, the only two god characters are Seelah and Merisiel. They are the only two with abilities that are just consistently strong or have a high ceiling for situational investment.
I have to disagree; I think evasion is not that strong.
Your biggest plus is, if she finds the villain early. First off, there is a low chance (Assuming a 4 person party it’s 1/6 that she’s in the location that has the villain). Then she isn’t guaranteed to find it early in the location (It could be at the bottom of the deck). Then (if on legendary) there’s the problem that the location might be out of the way, so if I move her without closing it, I might have to back track losing valuable turns). Even if it works out well, the evasion may shuffle the villain back to the bottom. You can do the same thing with Augury and some items, but Augury is much better as 1) It might get rid of other monsters you can place on the bottom 2) It places the villain on top 3) It doesn't cost tempo and can speed things up.
On legendary when finding the villain (Depending on the scenario) it can be better to just take the free closing and know where the villain could be in the remaining locations (Especially on legendary if it’s a location with only one adjacent location)
Evasion is good when you are forced to summon something during an encounter, or someone else’s encounter (Goblin Raid, bandit tower). Any other situation is a net loss of tempo (If I explore and evade my encounter, I lost an explore)
Merisiel biggest flaw is she doesn’t start with a weapon in a deck that doesn’t have many weapons. This hurts Merisiel more than Seelah who also doesn’t start with weapons, because Seelah doesn’t need Dex to be strong, and without a weapon Merisiel is forced into strength. Sure you can evade encounters until she gets a weapon, but again that’s losing tempo and turns.
I agree she’s the best barrier killer, and alone if she gets a ranged weapon she is a very strong combatant.
I’m definitely not saying Merisiel is bad, and evasion has it’s uses, but it definitely isn’t god tier in my opinion.
Merisiel also has a decent strength, though (which is easily boosted by blessings), and she can recharge or even discard when in a tough spot. She favors a quickly recycling deck anyway, so it shouldn't be too long before you find yourself with multiple weapons - she can certainly dig through her deck for them much better than Seelah, who is penalized for doing so and may end up discarding them anyway with an unlucky or unoptimal use of grace. The fact that she can recycle quickly without investment means she utilizes items like the staff of minor healing better than some, mitigating the opportunity cost of using allies or blessings to explore.
Something I tried out a couple months ago and have had some fun with is giving Merisiel the Ilsoari Gandethus I found. As she can evade a potential summon, the only downside is occupying an ally slot, leaving her a better scout than Harsk from the beginning of the game, since she can use Ilsoari's superior scouting method. Repeated use occupies a slot in your hand, but you essentially buy the scouting power feat for the cost of an increased hand size feat. And I know that card is not exclusive to Meri, but she can use it more easily than anyone, particularly in the early game.
Her evasion and spike damage potential may seem great but only circumstantial; however, the more she sees play (especially as the game progresses), the more often one can find those circumstances coming into play when her abilities are exceptionally effective. I still don't know if I'd put her in "god-tier", but she certainly has a high floor with still room to grow.
I also agree with the comments regarding the impact on "tiering" played by factors like party size (and others like synergies with other characters, but that is a long and complicated discussion itself).
- While I doubt anyone would give Harsk overall MVP, his potential undoubtedly scales with party size, for both roles and both alts.
- I'm in the possible minority who prefer Valeros to Amiri in small parties, where the advantages of lower variance and Teamwork powers and the benefit of being able to recharge weapons are more significant for me; but the larger the party, the more Amiri can throw weapons at enemies and HULK SMASH her way through obstacles without worrying about death by discard (or requiring healing to recycle weapons). Legendary difficulty also impacts the warriors' comparative effectiveness, which again scales based on party size. I'd vote Val having a higher floor than Amiri, but at least overall, she has a higher ceiling (solidified when using her alt).
- Ezren is another who scales up with party size, especially when using used as a utility mage instead of a blaster. The more blessings others have to pass around, the less the opportunity cost of bringing the wizard, and the more teammates facing various challenges, the more he can really bring to the table his ability to support anyone doing anything. Unparalleled exploration in the right locations only exaggerates that curve.
- Lem's change depends on grouping playstyle. Some people are more likely to explore in groups with a large party size, but I generally spread out more with more areas, so for me, Lem's effectiveness increases with smaller parties who can travel and close areas together (though I think he can be played to handle his own in large parties as well, especially if you go with Virtuoso). As a jack-of-all trades character, his value may further increase in smaller parties for those looking to cover more bases. Even without Virtuoso or any superior skillful / clever use, you can always spam healing with Versatile Performance to nova top-tier blessings support, Seelah-level exploration, or just solo without worry of playing conservatively.
- Sajan likely has the greatest disparity between optimization floor and ceiling, but if potential effectiveness is how things are ranked, I can't see him anywhere but in the same high rank as Ezren and Lini, though more because of differences in playstyle than party size. Sure he can be misused/under-utilized and become the most regrettable choice on a team, but no one else provides both the best consistent spike damage for tough combat checks and the best blessings bank for versatile individual and team support - with healing support (and practice), he can even fulfill both at once while also exploring like a boss.