Jirafalox,
1) 15% of the 25% starts when the Breath is under 25%, it linearly goes down till its ends when it's at -10%.
The other 10% of the 25% starts when the Energy is at 50% (and ends when it's at 0%).
I raised the 15% to 20% for the next update, as I had totally forgotten about the base being -10% and 0%...

2) Send me a Bug Report right after you notice such a typical hit, and I'll check if it makes sense or not. (HowTo =>
topic5-31732.php )
Rambobear,
Sorry, I won't go into complicated rebalancing now, as is the exact point cost.