Just checking.

Recruit Mephisto only if you have three or more Underworld character cards in your KO'd pile. You cannot lose the game and your opponents cannot win the game. At the start of your attack step, KO three characters you control. Flight/Range.

New underworld seems to make this way too good. um if I use a Cannt be ko'd effect then the cannt wins out over do yes?

When Mephisto's effect resolves, it will try to process as much of the effect as it can. Because it is not targetted, you choose which three characters to KO at the time it resolves.

If there is some existing modifier that keeps the chosen characters from becoming KO'ed, the effect has still been satisfied.

So yes, if you can keep 3 stunned characters around and either Modred or In Limbo, you can keep "KOing" those 3 stunned characters and eliminate Mephisto's drawback. Though you will also have to keep recovering him before the endurance check or keep him non-stunned into recovery to make sure his effect stays active, but there's strange love for that

For some reason I don't think this works. When the effect resolves you have to perform the effect as much as you can. But you are not KOing a character if you simply attempt to and fail. You do not get to "choose" the characters to KO (if you could then it would work) and say I choose to KO this character and then fail; fulfilling the condition requires that you keep attempting to KO 3 characters.

I could be wrong though.

it works, there is no cost associated with the KOing of characters and there is no "If you do" clause, so you can choose to KO characters that cannot be KO'd and still fullfill the requirement.

sweeeeet...super freakin sweeeet

Because the effect isn't targeted, modular, or have a conditional clause to it you simply designate three characters upon resolution that you are expressing intent to KO. There is no precedence in Vs. for "expressing intent" I will go ahead and state... you simply choose and simultaneously the effect processes.

Any modifiers in place (such as those that keep characters from being KO'ed) are still in effect at this time, and there are no guidelines for a card to double-check that its directions are carried out after the fact (in such cases, there will be text to the effect of, "if you do/do not...").

If something prevents one, two, or all three of the characters from actually being KO'ed, they remain in play while the rest are KO'ed successfully. The effect has been satisfied, processing as much of itself as possible.

For another example on how this does indeed work, consider if Mephisto's controller has less than three characters in play. You still attempt to process as much of the effect as you can, which will mean you might only try and KO one or two characters. The effect is still satisfied. It won't keep trying and trying until it succeeds in KO'ing three characters. This could potentially create an infinite loop, and such procedures are generally avoided if at all possible in the rules.

Man, just when I thought Mephisto was forever doomed to the unplayable section of my collection...

I mean, he's still an 8-drop on a non-stall team, but dang that's nice to see he actually has some synergy with cards that aren't Witching Hour now.

also note that if you have less than 3 characters in play, you Mephisto must be one of the characters you choose to KO since it doesnt say "KO 3 OTHER characters", just "KO 3 characters"