Soul esswraith

Soul esswraith are a type of esswraith found on the upper floor of the Runespan. They require level 90 Runecrafting to siphon for soul runes, requiring one rune essence and giving one soul rune and 106.5 Runecrafting experience for a successful siphon; an unsuccessful siphon will give no runes, consume no essence, and give 0-2 experience. You can absorb 5 soul runes before the esswraith dies, leaving 50 rune essence. However, if the player stopped siphoning before the esswraith was drained, they will not receive any essence. They respawn every 5 seconds.

Chipping
Soul esswraiths can also be "chipped" for rune essence. By using 10 blood runes on the esswraith, you will receive 10-20 rune essence. However, the same soul esswraith cannot be chipped twice in a row; you can't chip the same creature until you have chipped three other Runespan creatures of any type.

Lower level
Soul esswraiths cannot be found on the lower floor.

Middle level
Soul esswraiths cannot be found on the middle floor.

Upper level
Soul esswraiths can be found on platforms 15, 20, 21, 22, 23, 27, 29, 30 and 32 of the upper floor.

Trivia

 * Esswraith is a portmanteau of essence and wraith.
 * Soul Esswraiths have the soul rune symbol on their chest.