The reason I dislike the Power Word series is the HP thresholds have barely changed since 1e even though the expected hp totals of PCs and opponents has seen tremendous inflation.
In 1e, a 17th level Magic-user with Power Word: Kill would instantly slay all but the largest/oldest dragons at full health with its 60 hp cap. Only a few of the most powerful creatures could withstand the spell even at full hit points. It was a near-instant potent effect.
The comparative value of the series has decreased both the reduction in consequence of casting time and the hp inflation -- particularly since high hp is the main design consideration for high-level creature design.
The spells goes from "will instantly slay all the but largest ancient black dragon" (they top out a 64 hp at maximum hit dice and age) in 1e to killing a typical black dragon once the other half of its hp are removed in 5e.
In 1e, a 17th level Magic-user with Power Word: Kill would instantly slay all but the largest/oldest dragons at full health with its 60 hp cap. Only a few of the most powerful creatures could withstand the spell even at full hit points. It was a near-instant potent effect.
The comparative value of the series has decreased both the reduction in consequence of casting time and the hp inflation -- particularly since high hp is the main design consideration for high-level creature design.
The spells goes from "will instantly slay all the but largest ancient black dragon" (they top out a 64 hp at maximum hit dice and age) in 1e to killing a typical black dragon once the other half of its hp are removed in 5e.