Well, now...someone's got to comment on this YGO cards, ne? Here goes;
@NocturnLeader:
Vlad Dracula. Eeep, pretty dangerous since you can pull it out so easily with Book of Life. The ability is pretty situational, but 3100 Attack alone makes it worth considering.
Vampire Spawn...eh, looks like a nerfed Magical Explosion to me. Raise that damage to 200 at least, as it is you'd only get 3000 damage for having 3/4 of your deck devoted to spell cards and managing to dump them all. With a bit more damage to it this would have potential in decks based on Morphing Jar #2 since they tend to dump their own spells and traps accidentally.
Vampire Hunter and Vampire Slayer are both just too weak. How about dropping Vampire Hunter to 1500 Atk, doubled when battling Fiend and Zombie monsters? As it is, it can't even whop Archfiend Solider. Vampire Slayer could have one of those 'destroy any monster that battles with this card' type effects, although I find it ironic that it gets its arse handed to it by Vampire Lord. x3
Gloomy Castle...pretty neat idea, but it won't work with current wording. When a field spell is played the existing field is threatened by game mechanics, not the field spell's effect, so the summoning wouldn't trigger. It should be something like 'If another Field Spell card is activated while this card is face-up on the field...'.
Mecha-Stein is an absolute beast. That draw effect makes it a bit overpowered, though. I mean, by running a bit of Terraforming you could pretty effortlessly assemble three copies of Gloomy Castle in your hand then play them one by one, resulting in two Mecha Stein summons in one turn. Yikes. o.o Maybe change it to something like Berserk Dragon's down-powering effect (You know, loses 500 Attack for each battle) and put the card drawing effect as something you get when it's destroyed by battle?
Pure-White Warwolf...is a contra Enemy Controller/Book of Moon/Shrink/Rush card? Just about the only spell cards I can picture people playing on the other person's turn. Fair enough, I guess.
Ocean-Blue Warwolf, decently powered double-attacker but the extra fifty Attack means you can't pull it out by Mother Grizzly or the like, so it seems fairly balanced.
Crimson-Red Warwolf. The ability is really a side-note, but it's an acceptable beatstick of beastly persuasion.
The others are just subpar vanilla, really. Good for flavour, I suppose, but not much to say about them.
@Art_Critic_Cubone:
Excalibone...eh, gues that solves what we're pulling out with the hero's effect, eh? Very situational, but suits the hero nicely.
An Eternity of Space I'm a bit mixed about. I mean, it has a self-protection effect, which is good, but the actual usefulness is sort of dubious. Maybe make it more like Rainbow Ruins? You know, getting stronger when you have more "wandering" monsters on your field? As it is, it's sort of like a nerfed Sanctuary in the Sky with a more limited pool of accepted monsters.
The Wanderer's Secret is still a -1 and doesn't balance out your field like Hero Signal, so it's really not that hot. Maybe make it continuous or give it some additional effect? As it is, it's not really worth playing. :\
Bad Judgement is utterly cruel, and a very nice way to punish Gadget's 'clear and bap' approach to battles. Could also work for decks that run little to no monsters since it's both protection and card advantage. Nice one.
Excaliber...sort of dubious usefulness, although I guess it's nice against people who like hiding behind silly Sheep Tokens. Don't think I'd play it, though. I mean, excalibone at least works for everything and counters the weak to mediocre Atk problem.
End of the Journey: Backs Against the Wall reborn? xD But yeah, a handy way to get the fellowship together, I guess, and could be a potential game ender.
Anyways, since I've never been one to leave a post without adding some of my own:
Life Cycle
Quick-Play Spell
Select one monster on either player's field and tribute it. The controller of the tributed monster gains life points equal to the combined Atk and Def of the tributed monster.
^
Swords to Plowshares goes YGO? For some reason that's one of the few MTG cards I remember. xD
Shuffle Slash
Normal Spell
Shuffle this card into your deck then discard a number of cards from the top of your deck equal to the number of cards in your opponent's hand. For each "Shuffle Slash" discarded by this effect, declare one card type (Spell, Trap, or Monster). Your opponent discards all cards of the declared type(s) from his/her deck.
^
Limited to two per deck. :3
Sage of Solitude
Spellcaster/Effect
4 Star/Dark
1400 Atk/1000 Def
If this card destroys an opponent's monster by battle, your opponent cannot summon or set any monsters (Including Flip Summon) during the next turn.
Ojamerization
Normal Spell
Remove from play from your hand, field, or deck Fusion Material Monsters that are listed on a Fusion Monster with 'Ojama' in its card name and Special Summon the Fusion Monster from your Fusion Deck. (This is treated as a Fusion Summon)
Ojama Queen
Beast/Fusion/Effect
6 Star/Light
0 Atk/3000 Def
"Ojama Black" + "Ojama Green" + "Ojama Yellow". Whenever your opponent Summons a monster (Including Flip Summon) while this card is face-up on your field, special summon one monster named "Ojama Black", "Ojama Green", or "Ojama Yellow" from your hand, deck, or graveyard to the field in face-up Attack or Defense Position. While this monster is in face-up Attack Position, increase the Atk of all other 'Ojama' monsters on your field by 2000.
Ojama Sage
Beast/Fusion/Effect
4 Star/Light
0 Atk / 2500 Def
"Ojama Black" + "Ojama Yellow". During each of your draw phases, if this card is face-up on your field you may add one Spell Card with 'Oja' in its name from your Graveyard to your hand instead of drawing card.