Enrage

Enrage is a feature in ExperienceRO where every time you kill a monster or player, there's a 1% chance you'll get an Enrage Counter. When you die, your Enrage Counter is deducted by 3. Enrage has 3 tiers, at 100 Counters, 200 and 300. Each tier activates a specific effect or bonus.
 * Every time you kill a monster or a player, there is 1% you'll be awarded an "Enrage Counter" - There will be a message in your main chat window informing you so.
 * Every time you die, whether in battle or not, die... you'll lose 3 Enrage Counters.
 * Enrage Counters reset at 12 midnight (00:00 GMT+8)
 * There are three different Enrage levels triggering at: 100, 200 and 300.
 * Enrage Counters are Char Bound.

One of the items that uses this feature is Staff of Inferno. Other Enrage-enabled items can be found at Justin.