Time for one last meme in 3.21: Infernal Blade. This dagger casts level 30 flame dash when you use a socketed skill. This item is incredibly buggy and strange, but I did find a use case with certain skills. If you use a skill like Ice Nova, where you don't have to aim, using the skill will trigger flame dash to where you aim and then cast Ice Nova at the destination.

This is really memey, but I have wanted to use this dagger for a while and needed to actually make use of the trigger flame dash mechanic. The result of this build is a zdps bosser and a one button GIGA exploder. You cast your skill, it auto-flame dashes you into a pack, and the giga-aoe double blasphemy setup curses everything, Heraldry from a medium cluster jewel applies Elementalist's juiced up exposure, then the ice nova goes off a few milliseconds later, causing a chain of herald of ice, herald of ash and Profane Bloom explosions. It is unbelievably satisfying, just don't try a metamorph or a juiced Essence.

This is NOT a build I'd recommend outside of late league memery, but I wanted to bring it here to show off the first ever (that I have seen) use case for the Infernal Blade dagger, and maybe inspire some others to try this goofy dagger. This item is so rarely used that the implicit isn't even recognized by PoB, despite being in the game for nearly 3 years. Hope you enjoy!

PoB: https://pobb.in/8eJvLQlUsd3r