Icarus was a solution (frw) to surviving terror Fauztinville for the Black Road Challenge and I kept them because they had 2.4k defense in the glove slot (t6 gauntlets) which was nice given the low strength requirement. At that point in the game, there aren't a ton of spare points to invest in dexterity to equip a high tier shield so the defense is welcomed.
Runeword Level: 45
33% Chance to cast level 6 Fire Splash on Kill
+2 to All Skills
+10% to Maximum Fire Resist
Fire Resist +31%
Level 2 Possess (124 Charges)
is another good option with the +2 skills, proc, max fire res and orb space so maybe give those a try. My goal was to keep the build cheap through mid-game so I avoided adding sus to that part of the guide. I haven't used Bonecrushers specifically with the build, but most of the stats are useful. If I already had Flying Saucer, I'd use Bonecrushers over Icarus.