R5 (effects)
When Ahri tries to make the corner and enter the rear hall, a huge bubble of the sludge globs out right in his path. He tries to jump it, but it swells even higher. The sliding acidic sludge slaps into his legs and hips.
He manages to land back on the ground, but the sticky substances completely coats him up to the waist. He yells out in agony as the acid begins to dissolve past the skin and into the muscle.
The lamp drops into the acid pool, the light of the flame is quickly snuffed out as the metal canister sinks into the gel. Darkness falls over Ahri as the gel slides all around him and past him, flowing further into the edge of the hallway.
Ahri slogs forward, desperately trying to wade out of the deadly substance that is maiming him worse every second now.
Ahri enters the Zero Hit Point State. 3 Levels of Exhaustion. Includes halving of Movement rate and Disadvantage on Saving Throws.
Required Action, Ahri: DEX Save DC 12 or be Engulfed
Fail Save
Ahri stumbles down. His hands and arms splash into the sludge as he falls forward.
Panicking, he tries to spring back up, but dissolving muscles tear in his right leg. Ahri splatters face down in the rising acid.
Another wave of sticky acid sludge rolls right over his back. Ahri is instantly submerged, silenced before he can let out a final scream.
Oh well. We all know that we ride or die around here.
Rolls
DEX Save DC 12 - (1d20+7)
(6) + 7 = 13
DEX Save DC 12 Disadvantage - (1d20+7)
(3) + 7 = 10