Hi Doom Knight can block physical dmg spell Tornado, Molten Bolder.
Attack Miss indicator display white cross.
Why some spell can be blocked be some monsters?
If I would have to guess, maybe exactly because it is physical damage.
Maybe it’s related to the Next-Delay = 1 (25 atks per seconds at most).
Too many nados = some of them don’t dmg your target. Have you tried against other monsters / players?
Tornado has always been treated as a melee attack because of the physical damage. Technically not a bug, though it is a weird design choice