With Kagemaru, if he were to recover to full AP, while in stealth, (meaning recover to 5 and pay upkeep down to 4) he could charge on someone, then use Tenchu, and still me at 1 AP for dodging since the charge won't reveal him from stealth. That's pretty darned nasty.
in the spanish Kagemaru's card(and surely in next FAQ)he cant charge in stealth, and remain stealth, looks is a misprint english card...., but we need the next books of saga III and IV to clear this...,
will be great stealth charge + tenchu..., but at least in spain we cant to make this combo..., but to get at least one or two actions points, is really great for me..., this card becomes to Kagemaru with no doubt in the best prowler, higher than Aizen...,
for example, you can to make tenchu, and basic attack..., or kirin + basic attack...,
and all chars with range attack, can to make the XII combo, with same cost of actions points..., range attack +1 charge +2 basic attack +1, although i believe is better charge +2, basic attacks +1, basic attack, +1, of course if all cause damage...
I honestly believe it should be 10 levels myself. The comparison to Nephiros is a good one. While Nephiros can be taken by anyone, it requires a full kill to get 1 AP. So it seems a bit off that Supernatural Devourer can give up to a maximum of 3 merely for damaging someone.
maybe to be more limited..., as to make 1 point for turn..., probably the card is too powerful...., and make other chars as Marķa or Lilith more powerfuls yet..., and now they are really greats chars