Thermo-Compression
The Thermo-Priest has integrated a compressor to his brethren's steam equipment. This little devices allows to channel magic flows within the boiler.
1 Earth 
Path: Forge
Range: 10 cm
Difficulty: 5
Duration: Until end of round
Area of Effect: Special
Frequency: 1
Intensity: 1
A.P.: 6
Once this spell is successfully cast, the compressor reacts by activating the boiler which then provides an optimal pressure. For one round, the bearer of the boiler can re-roll once each of his Pressure Rolls, in which case he will have to keep the result of this second roll.
You will have to pay the spell's price in A.P. as many times as there are Dwarves wishing to equip their boilers with a compressor. They will be the only possible targets of the Thermo-Compression. This spell can only be cast when the Magician is Activated and must target a Dwarf with steam equipment.