Whenever a Chance to Cast spell will proc and move through Baal it displays the missed it “X”.
This is really visible when the Hellfire Torch Diablo firestorm procs, or any other fire DOT spell like Blaze or Firewall occurs.
Items tested that display the missed hit X…
CTC on Striking
Twister - Carion Ring
Tornado- Horizon’s, Rift, and Stormlash
Fissure- Earthshaker
Volcano- Pompeii’s Wrath
Firestorm- Hellmouth Guantlets, Phoenix shield,
Static Field- Stormlash
Charged Bolt- Chaos
Frost Nova- Shadow Killer
Ice Blast- Coldkill Hatchet
Fireball- Enlightment armor
Lightning-Wisp Projector,
Chain lightning- Crescent Moon, Stormrider
Meteor- Hellmouth War Gauntlests, Moonfall,
Blizzard- Zakarum’s Hand,
Hydra- Dragon Body armo (each fire bolt displays an x)
Froze orb- Chaos, Voice of Reason,
Diablo firestorm- Hellfire Torch
CTC on Attack
Charged bolt- Lash wish
Fire Ball- Hellslayer,
Nova- Destruction
Chain Lightning- Lightsabre pb,
Glacial spike- Death
Frozen Orb- Rift
CTC when Struck
Mindblast- Delirium
Twister- Zephyr
Tornado- Stormchaser Scutum,
Charged Bolt- Stormspike, IK war gauntlets, Stormrider,
Frost Nova- Coldkill Hatchet, Tiamat’s Rebuke,
Blaze- Enightment armor, Inferno stride,
Firewall- Pride,
Chain Lightning- Naj’s Circlet, Stormspire
Meteor- Rising Sun amulet,
Blizzard- Stormchaser Scutum, Snowclash belt,
Hydra- Tiamat’s Rebuke