These are the rulers I am interested in using. I started with ten, and then expanded to 14. I plan to build ten casual decks out of these cards. I may buy a few singles since they are so cheap. (-- means I have it ready for cube-building)
1. (--) Grimm, the Fairy Tale Prince (CMF-005)
Text: ("Continuous You may pay the attribute cost of Fairy Tale resonators with will of any attribute.
Activate [1], discard a Fairy Tale resonator: Search your deck for a Fairy Tale resonator, reveal it and put it into your hand. Then shuffle your deck. Play this ability only once per turn.")
Grimm does not have a J-Ruler side, which is a disadvantage. However, as more Fairy Tales are issued, the number of cards that Grimm enables will only increase.
2. (--) Pandora, Girl of the Box / Pandora of Dark (CMF-013/087)
Text: ("Judgement [W][B][3]"::"Automatic [Enter]Your opponent discards his or her hand.")
400/800
The five will requirement is steep. A deck will need some will acceleration to force your opponent to discard something. If by the time you J-activate, your opponent has an empty hand, there is no benefit from the Automatic ability. Pandora of Dark will not get better as more cards are issued, yet it is an interesting ruler in a cube.
3. (--) Little Red Riding Hood / Little Red, the Wolf Girl (CMF-027)
Text: ("Judgement [0] Play this ability only if you put a Moon into a field this turn."::"[Swiftness] (This card can attack and play its abilities the same turn it enters a field.) Automatic [Enter]This card deals 800 damage to target resonator. Automatic At the end of turn ⇒ Put this card into your ruler area as a ruler."
1200/200
The Moon restriction limits what stones you use. Otherwise, it's a beat stick for an aggro deck. Little Red, the Wolf Girl will not get better as more cards are issued, yet it is an interesting ruler in a cube.
4. (--) Snow White / Bloody Snow White (CMF-036)
Text: ("Judgement [W][R][2]. Judgement [1], discard ""Poison Apple"""::"[Precision] (This card can attack recovered J/resonators.) Activate [rest]: Rest target J/resonator. Activate [1], discard ""Poison Apple"": Destroy target resonator.")
1300/1300
It requires two types of will and will not get better since it's unlike more cards with "Poison Apple" will be issued. It's a strong body, though. 1300/1300 is nothing to laugh at. It's an interesting addition that will likely not get better in the future.
5. (--) Nameless Girl / Jeanne d'Arc, the Flame of Hatred (CMF-047)
Text: ("Judgement [R][U][2] If a Human was put into your graveyard from a field this turn, you may pay [0] to play this ability instead."::"Automatic [Enter]Destroy all other Humans. Activate [rest]: Prevent all damage that would be dealt by target Human resonator until end of turn." )
1200/1200
It requires two types of will and will likely get better since it's very likely that more Human resonators will be issued. If in a future Wanderer metagame there is an overpowered Human, this will be the J-Ruler to keep it in check. 1200/1200 is nothing to laugh at.
Text: ("Judgement [G][G][2] If your opponent controls a Vampire, Immortal or Werewolf resonator, you may pay [0] to play this ability instead. Activate [rest]: Draw a card. Play this ability only if you have exactly five cards in your hand." "Automatic [Enter]Target non-Human J/resonator loses all abilities until end of turn. At the end of turn ⇒ destroy it.")
1000/1000
It has been superseded by Helsing, from Lapis Cluster. Elf rulers are here to stay. If in a future meta Vampires, Immortals, or Werewolfs get out of control, this ruler will keep them in check. Right now, it's only an interesting addition in this cube.
7. Alucard, the Dark Noble / Dracula, the Demonic One (CMF-077)
Text: ("Judgement [0] Play this ability only if you control a Vampire resonator and a resonator was put into a graveyard from your opponent's field this turn. Activate [rest]: Target resonator gains [+0/-300] until end of turn."::"[Flying][Imperishable] Automatic Whenever a resonator is put into a graveyard from your opponent's field ⇒ If it was dealt damage by this card this turn, put it into your field under your control. It gains Nightmare and Vampire in addition to its own race.")
1000/1000
It has a strong J-Ruler body with Flying, and can take out small resonators. It could be one of those J-Rulers that stick around as more Vampires are issued. It could also be powered creeped if -300 is not so strong several clusters from now. Right now, it's only an interesting addition in this cube.
Text: ("Judgement [W]. Play this ability only if you control ""Almerius, the Levitating Stone"". Judgement [W][W][1]. Activate (Rest): You gain 300 life."::"Continuous Once per turn, you may play a card from your removed area. Activate [0]: If there are no cards in your removed area, remove the top three cards of your deck from the game face down. You may look at them at any time.")
1000/1000
A solid J-Ruler body. It requires a specific stone, and that can be a drawback. I can see this ruler getting stronger in the future. It's any card in your deck, and that can mean a lot of great choices. Never mind what it does, thought, this is one beautiful card.
9. (--) Falltgold, the Dragoon / Bahamut, the Dragon King (TAT-026)
Text: ("Judgement Banish a fire resonator. Activate [rest]: Search your deck for a Dragon resonator, reveal it and put it into your hand. Then shuffle your deck."::"[Flying] Automatic [Enter] This card deals damage to target resonator equal to the ATK of resonator banished for its judgment cost. Activate Banish a fire resonator: This card gains [Imperishable] until end of turn.")
1000/1000
It can only get better if there are strong Dragons available. A 1000/1000 Flyer is good. Let's hope the game does not get power creeped enough that Flying becomes irrelevant. I love the artwork, too.
10. (--) Alice in Wonderland / Alice, the Drifter in the World (TAT-037)
Text: ("Judgement [J-Activate]: any number of will. You cannot choose to pay [0]"::"Automatic
[Enter] If you paid [W] for doing judgment, you gain 1000 life. If you paid [U], draw a card. If you paid [B], target opponent discard a card. If you paid [R], this card deals 1000 damage to up to one target resonator. If you paid [G], destroy up to one target addition. If you paid will of each attribute and will produced from ""Moojdart, the Fantasy Stone"", this card gains [Flying] and [Swiftness] until end of turn.")
700/700
This is a really fun ruler for a multi-colored deck. So many options! It is not a broken toolbox like Reflect/Refrain. It just has a lot of options. Yeah, this ruler reads versatility all the way.
Text: ("Judgement [0]. Play this ability only if you put ""Refarth, the Castle in Heaven"" into a field this turn. Judgement [G][G][1]."::"Continuous This card cannot be targeted by darkness or fire spells or darkness or fire card's abilities. Continuous If a spell or ability would increase ATK or DEF of resonators you control, it increases double that much instead. Continuous If a spell or ability would decrease ATK or DEF of resonators you control, it decreases none instead.")
800/1000
It has a solid body as a J-Ruler, it is easy to buff, and it protects itself from any negative life spell. What's not to like? I think it can get better and better.
12. Moon Princess of Stellar Wars / Kaguya, the Immortal Princess (MPR-046)
Text: ("Judgement [2][x]. Spend only [M] will on X."::"[Flying] [Imperishable] Automatic [Enter] Search your deck for X Treasury Item cards and put them into your field. Continuous This card gains [+200/+0] for each Treasury Item you control. Activate Banish three Treasury Items: Gain control of target resonator.")
400/1000
It has Flying and can get big, but it is limited by whatever Treasury Items are available. I don't see more being issued, and that's why I think it is only an interesting addition to this cube.
Text: ("Automatic At the beginning of the game ⇒ Search your magic stone deck for a card. Then, shuffle the rest of your magic stone deck and put that card on top of it. Judgement
[1][G][G]."::"Automatic [Enter] Search your deck for a card and put it into your hand. Then shuffle your deck. Activate [rest]: Draw two cards if you have no cards in your hand.")
700/800
Interestingly, I think this is the ruler from Grimm cluster that could end up having the best long term potential. It tutors (searches for a card) and there is no restriction on which card that could be, and it mana ramps (bumps up your will). Both are great, with tutoring, of course, being a completely busted benefit.
14. (--) Fiend of Dark Pyre / Nyarlathotep, the Faceless God (MPR-080)
Text: ("Judgement [0]. Play this ability only if you put a Cthulhu into a field this turn."::"Automatic
[Enter] Your opponent banishes a non-Cthulhu resonator. Continuous This card's ATK is equal to total ATK of Cthulhu resonators you control."
0/1000
The body on this one is tricky. It forces you to have Cthulhus on the board. I am looking forward to this tribe getting bigger, but also, it definitely needs to get better. Better Cthulhus will make this a great ruler long-term. Your opponent chooses which resonator to banish, which is not that great against a board full of elves, but is simply awesome against one or two resonators with a lot of protection, because asking your opponent to banish bypasses any protection on their resonators.

