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- 取決於設定、你的職業或其他插件（詳情請見提示）
作用
將指定單位預計達到你設定的生命力百分比所需的秒數與你設定的秒數進行比較。依「模式」的設定，由近期的傷害、治療或兩者估算。
為什麼會用到它
Estimates how many seconds until a unit reaches a health percentage, from the recent rate of damage and healing on it. Use it to prepare for an execute phase, such as pooling rage for Execute when the target will reach 20% within a few seconds, or to hold a cooldown for a boss phase that starts at a set percentage. Mode picks whether damage, heals or both feed the estimate. It does not exist on Retail or WoW Forever, where health and the combat log are hidden from addons. See also 距離生命力達到所需時間 and 生命力百分比.
範例
你的目標的生命力降至 20% 所需的時間 小於 5 秒，僅傷害
設定
條件編輯器中每項設定的意義，取自遊戲內的說明。
單位 - The unit this condition uses as the target of comparison.
生命力 - The target health the rule is waiting for 單位 to get to as a percentage of their total health.
運算子 - How to compare 距離生命力百分比達到所需時間 with the 秒 value. This comparison uses basic mathematical comparison operations.
秒 - How many seconds (estimated) until 單位 reaches the target health percentage.
模式 - How the burn rate should be calculated, which is used to estimate the time to target health.
傷害與治療 - Both damage and heals on 單位 will be factored into the 'burn rate' (essentially mitigating damage with heals for a realistic burn rate)
僅傷害 - Only damage on 單位 will be factored into the 'burn rate', which will cause some spikes in time-to-target if they are healed.
僅治療 - Only heals on 單位 will be factored into the 'burn rate', essentially pretending they are not being hit at all.