Fallen Prince Anduin

Some people wanted to see Anduin carrying his father's sword. Be careful what you wish for.

For sake of visual readability, I limited the design to blue effects which match the Frostmourne aesthetics the most.

Splash art

in-game perspective

Recolours.
From the left: Unholy, Blood, Nerubian, Banshee King

themed portrait

Bonus: alternative version with Crown of Domination. Sometimes Blizzard releases two versions of skins.