Recently I've been reviewing the demon summoning rules from various branches of "d100" and I just noticed a striking discontinuity between Elric! and the BGB. I wonder if anyone else can confirm this.
In Elric!, and presumably SB5, it costs 9 MPs to try to summon a demon. A point of POW must also be sacrificed if a binding will be attempted. The summoning only works on a successful Luck roll. If the roll is unsuccessful, the MP (and POW, if applicable) are still spent.
In the BGB, it costs 9 MP to summon a demon, period. No roll is required.
In Elric/SB5, MP have to be spent to define the demon. Eight of the points used in the summoning are credited toward this, but 1 MP must be spent for each d8 of characteristic, 1 MP must be spent for each 10 percentiles in any skill or demon ability, and additional MP must be spent if the demon has multiple modes of movement. The sample demon breeds don't precisely follow these formulae, but the (very weak) Servant Demon is close, and it costs 20 MP to summon.
In the BGB, no additional MP need to be spent on top of summoning. There aren't any rules for defining demons, but two examples are given. The characteristics of greater and lesser demons aren't given in terms of d8s, but if you do a rough translation based on averages, a greater demon's cost in Elric! terms would be:
APP: 1 or 5
It has two movement modes, so that would add at least 1 MP. Its armor would cost 4 MP, once you translate it into random AP. By my accounting, various skills and powers would conservatively add 100 or more to the cost. In total, an Elric! demon equivalent to a BGB greater demon would require the sacrifice of at least ~130 MP.
I have two concerns about this. First, it seems that demon summoning in the BGB is vastly more powerful than in Elric!, and possibly unbalanced relative to other Sorcery spells, other magic/powers systems in BRP, and everything else in the game. We can agree that balance isn't everything, though. Besides, unless the demon is bound, the GM has a lot of leeway via negotiation. If a sorcerer has POW to spare on binding, though, and a decent chance of winning the POW vs. POW binding roll, that remedy is unavailable.
Second, the relatively low cost of summoning in the BGB makes the Brazier of Power and Chain of Being spells pretty much superfluous. Summoning is the only thing I can find whose cost could make those two spells useful--provided you use the point costs from Elric!
Am I wrong? Or should the summoning rules in the BGB be errata-ed?