Game Mechanics: Mob casting range

[mcoy]

Bound myself at zone in at lower guk undead zone in line. Downstairs from savant room I was about to die so I gated out. Mob at that location was casting on me - gate worked and I was back at zoneline and the nuke landed and killed me.

[Sun Jan 05 01:04:08 2020] You begin casting Gate.
[Sun Jan 05 01:04:09 2020] An urd ghoul wizard hits YOU for 84 points of damage.
[Sun Jan 05 01:04:10 2020] You resist the Word of Spirit spell!
[Sun Jan 05 01:04:10 2020] You told Mayyne, 'dead'
[Sun Jan 05 01:04:12 2020] An urd ghoul wizard hits YOU for 33 points of damage.
[Sun Jan 05 01:04:12 2020] An urd ghoul wizard hits YOU for 14 points of damage.
[Sun Jan 05 01:04:12 2020] Emmanual begins to cast a spell.
[Sun Jan 05 01:04:12 2020] A ghoul savant crushes YOU for 19 points of damage.
[Sun Jan 05 01:04:13 2020] You regain your concentration and continue your casting.
[Sun Jan 05 01:04:14 2020] Your skin freezes over. You have taken 104 points of damage.
[Sun Jan 05 01:04:14 2020] You have been knocked unconscious!
[Sun Jan 05 01:04:14 2020] You have been slain by an urd ghoul wizard!
[Sun Jan 05 01:04:14 2020] You have lost experience.
[Sun Jan 05 01:04:18 2020] Returning to home point, please wait...
[Sun Jan 05 01:04:18 2020] LOADING, PLEASE WAIT...
[Sun Jan 05 01:04:25 2020] You have entered Ruins of Old Guk.

[DMN]

Ya, while i don't recall any specific memories of whether there was an absolute limit to the range they gave to MOBs, they were given the ability to cast on you regardless of range or LOS. their only requirement was to have LOS of you when they begin to cast.