Maybe. It says "...for our current purposes consider it to provide the full range of thaumaturgy spells (those which are agenda-compatible, at any rate)."
It doesn't say anything about evocation's speed and methods, but maybe that's implied?
It does seem weak for 1 Refresh, but that drawback wouldn't be enough. If the drawback only applies when you use the Power, then you can just not use the power when it wouldn't be worth it. So there's no reason not to buy the Power.
To balance out a -0 Power that has an actual benefit, you need a drawback that isn't optional.
It generally gives Ritual, Channelling, evothaum, a sponsored agenda, and some other bonus.
The agenda is cost-neutral, Ritual and Channelling are subsumed by Evocation and Thaumaturgy, and the other bonus is usually worth about 1 Refresh. So 1 Refresh for the evothaum seems reasonable to me.
1. Looking through the books, hmm, yes, it isn't explicitly stated.
2. How do you explain things like Cassandra's Tears then?
That said, I get where you're coming from - if made a free power, there's no reason for all casters not to pick it up anyway. Then again, my suggested drawback was just a suggestion. Maybe insetad of costing one stress, it permanently reduces your stress track by 1? After all, such control over magic can't be good for your mental health...
3. I don't think that's how the power breaks down.
Benefits: Standard sponsored magic bene- fits (page 288). Kemmlerian necromancy comes with automatic, additional specializations in necromancy: +1 to control, +1 to complexity, stacking on top of any existing specializa- tions.
Benefits: Standard sponsored magic bene- fits (page 288). Hellfire likes to inflict pain and harm, but isn’t particularly concerned about being controlled; gain a +1 to the power or complexity threshold on any spell intended to inflict stress or consequences
Benefits: Standard sponsored magic benefits (page 288). What particular flavor these benefits take depends on the nature of the place. For example, a ley-line might draw on an ancient Spirit of Decay lurking beneath the fabric of the local Nevernever, allowing entropomantic effects with evocation’s speed and methods. It might offer a +1 to control and complexity for any entropomancy as well
As shown above, since the additional spellcasting benefit is equal to a +1 control and +1 power,
stacking with existing specializations, provided you already have at least three points of Refinement (+3/+2/+1) it's just as cost efficient go get sponsored magic as two more points of Refinement. Better, in fact, if your GM rules the benefits of sponsored magic doesn't count against the usual limit from Refinements.
And you get all the other benefits of a sponsor. And if you already have more than three Refinements (like almost every statted spellcaster), it's always straight up better to spring for sponsored magic. So, yeah, that benefit by itself is easily worth two Refresh - the other benefits are mostly cost-neutral.
Also, there's this:
“With Evocation’s Methods and Speed”
When you see this phrase in the power sources listed starting on page 290, here’s what it means:
-The spell is still limited to line of sight, like evocation.
-The spell is cast like evocation: power first, control later, all done in one exchange.
-Thaumaturgy’s set of effects are broader-reaching, not constricted by the straight-line force principles of evocation. With the power source, you get access to the listed set of thaumaturgic effects (often a thematic grouping of some sort) as a viable effect of an evocation spell. So you might be able to throw together a small ward quickly, summon a minor creature extra-quick, or cast a curse of decay with the flick of a wrist. In these cases, use what would have been the complexity of the thaumaturgic effect as a guideline for the power of the evocation.
This may seem like a bit of a shell game, since the sets of mechanical effects available to thaumaturgy and evocation are pretty similar, with only a few areas of non-overlap. You’d be mostly right, but for this point: getting a broad range of effects out of evoca- tion is an exercise in creative rationalization. What the power source is offering in this specific case, then, is a broadening of what you don’t have to rationalize. It’s just quickly, easily available to your spellcaster. Combine this with a few mechanical benefits available with each source and it’s a definite upgrade to a character’s arcane options.
In the developer's own words, Thaumaturgy With Evocation’s Methods and Speed is little more than a cool bit of fluff your character gets, that is, cost-neutral. As such, making it cost a whole point of refresh is a bit much.