User blog comment:RoznosicielCiast/Some really important things/myths about Darius/@comment-65.49.68.193-20130304114324/@comment-6061249-20130304140257

Frozen Mallet is propably one of best items for him. Just because he has almost no way to chase when E and W are gone. Also, it boosts him up with additional health and damage. Slow from Mallet oftenly forces enemies to flash out. Just depends on situation, some people say that they can't play without Randuin as him, when i just swap it into Frozen Heart, which recently ended up in my pentakill (just bought it and after whole teamfight i left out with 100-200 mana).

It just depends. You can even go into Triforce, or rush more damage or tankiness and ignore slowing items.