User blog comment:TMek7/Zilean (Alternative)/@comment-4636093-20140315012255/@comment-8802138-20140315213011

Very good point. To give some examples, Time Bomb is likely levelled first and costs 150 time at rank 5. That said, at a rate of 1 time per second, with no possibilities of increasing this rate (energy has runes at least), the skill has an effective cooldown of 150 seconds (75 if under 50% time), and the actual cooldown is nearly nothing owed to rewind and his passive CDR. A kill will give him 140 time if I calculate correctly. That's not even the cost of a single Time Bomb.