Eff it, sometimes I need one that’s a walk.
The way these posts tend to happen is I go into the garage where my physical D&D books are kept and I reach into the shelf and pull out a book I haven’t read lately, flip it open and see if what I see on the page reminds me of anything and this month we got the Complete Divine and the page I flipped to was the Rainbow Servant.
Good news, this class can do some beautiful bullshit, and it can do it while looking really gay.
What we’re going to deal with her is a lovely overlap of unintended consequence. See, D&D creation was ultimately fractal; when you made a new class or a new race, you could test it against other stuff but as more stuff happened, you would always find combinations of stuff interacting in ways you maybe didn’t intend. Sometimes this meant you could find two different spells in different supplements did identical things, but one was much stronger, and sometimes this meant that a character could take two identical feats for double the effect. The copy editors at Wizards of the Coast could keep on top of this most of the time, but not always.
What mostly happened, then, was things were tested against a core of ‘what was in the player’s handbook’ and the more sources you added, the more wild things could get. That was one of the ways the game got weird, too – the more of the exciting and interesting stuff you started to include, the more weird byproducts you got.
This time around, what we have is the collision between the Complete Divine and The Miniatures Handbook and repeated in the Complete Arcane. The two parts at work here are the Warmage (a class) and the Rainbow Servant (a Prestige Class).
Rainbow Servants are spellcasters that learn from and benefit from a relationship with couatls, a type of sorta-kinda-Aztec-y divine monster creatures that are snakes, that relate to rainbows, and yet, suspiciously, aren’t shown in rainbows in their default art. Must seem gay. Anyway, these couatls grant special gifts to arcane spellcasters, and those casters get to be Rainbow Servants.
As written, the Rainbow Servant is a prestige class for arcane spellcasters that want to add a bit of divine vibe to what they’re doing, in exchange for eating some spellcasting levels. Most of the time, this tradeoff isn’t worth it: spellcasters that give up spellcasting levels need to get something truly immense in exchange. The stuff you get out of the Rainbow Servant is domains (which add spells to your potential repertoire), beautiful rainbow wings, and then, eventually, the entire cleric spell list added to your spell list.
For a sorcerer or wizard, this represents more options, but not more choices. These classes still have to spend resources to know those spells. Wizards adding the entire cleric spell list to their spellbook is a lot of power, but you had to give up four levels of spells to get there, and that’s typically not a worthwhile tradeoff. Sorcerers need to spend their very limited spells known to get those spells, but you already don’t have enough spells.
So, Rainbow Servant is a bit weak, and you might pick it up if you really really wanted the rainbow wings, for example, or you had a strong concept for a divine-arcane mixed up spellcasters.
But then, let’s introduce to the conversation the Warmage.
The Warmage is a class designed for a kind of different form of D&D. It was originally made to be a boomspell platform for the miniatures game, which used D&D combat rules to resolve a tactical miniatures wargame. Noticing that for fast combat, choosing spell preparation is a pain in the ass but choosing the right spell for the job on the spot is hard enough, they created a spellcaster who just always had access to all their spells, and made that spell list limited.
If a warmage adds spells to their spell list – like with a domain – then suddenly, they can cast, spontaneously, every spell on the domain list that’s of a level they have access to. That’s pretty good. Then when they hit level 10, they have all the spells in the cleric list, available to cast spontaneously, and the existing warmage blast spells.
That’s really cool!
This build is also not especially strong, at least, not most of the time. You need to hit around level 16 before this happens, and at that point, you have a character who’s casting lots of different level 6 spells. You’ll never get access to 9th level spells (without some nonsense), but you’ll have enormous flexibility all the way up there – the best cleric spell for the job, all those lower level slots able to turn into useful buffs, and a bunch of handy special abilities to go with it.
This is clearly unintended consequence. The Rainbow Servant was not made to be a route to ‘late-game megacleric wizard.’ The Warmage was not created to turn into a support machine with the right level choices. These two elements were not created to interact with each other. One can argue that this interaction, being unintended, should be excluded. After all, if it wasn’t tested, it might have unforseen consequences. This is how a lot of MMOs behave: even things that are designed to replicate one another are often designed to not stack or interact, so as to prevent players from having too much of an effect. Check out how for a time, World of Warcraft had a standard list of ‘raid buffs’ (and may still have but I don’t care to check).
However, this is where TTRPGs have a freedom. You can look at how players engage with the game, and make those choices on the fly. You can decide if a player doing this stuff is eating up time. Hypothetically, you can even decide how in your game it’s okay for things to work out unfairly in one player’s favour, because that player may be less strategically minded, or not inclined to take advantage of the power, or bad at managing the information load. You might decide that it’s okay, because you can see other ways other things can be just as powerful that you are okay with. You can even decide to adjust this as the game goes on.
But don’t forget that sometimes, there are cool, odd interactions that some players may pick up just because they like the gay rainbow wings.