[b43] Gather the threads

[Baker]

Gather the threads does not work as described in the skill description. Supposed skill effect at my character level is +9.36 spellpower in the first turn, then a cumulative +1.56 every turn for five turns.

The actual effect is:
Turn 1: +3
Turn 2: +1
Turn 3: +0
Turn 4: +0
Turn 5: +0
Turn 6: +0
Turn 7: -4

Either there's some factor missing from the skill description or the skill is completely broken.

[supermini]

Spellpower, like any sort of power and saves, has diminishing returns. After 20 points every point costs 2, after 40 points every point costs 3 etc.