Created and used by Furkas Xoud. Converted to 5e.
ROD OF GRIPPING SMOKE
Rod, very rare (requires attunement)
One half of this rod is made of gray, semisolid fog, while the other half glows from within as if filled with flickering embers. A rod of gripping smoke acts as a +1 ghost touch light mace. Three times per day, as the wielder casts a spell that creates fog or smoke, it can make the effect particularly cloying, causing the area of the spell to count as difficult terrain. This ability can’t modify fog or smoke spells that already specifically impede movement (like solid fog). As part of the same action it can negate the concentration requirement of the spell.
Additionally, three times per day as a bonus action, the wielder of a rod of gripping smoke can point the rod at any single target within an area of fog, mist, smoke, or similar vapour within 60 feet (including the area of foglike spells such as cloudkill or incendiary cloud) and cause the vapour to tighten around that target. This attack acts as the spell telekinesis with the added option of performing a disarming attack (PHB pg. 74). The wielder of the rod can use their spellcasting DC to set the Strength saving throw for the opposed check.