Keen Sight and Smell. The Slaghund has advantage on Wisdom (Perception) checks that rely on sight or smell.

Trailblazer. The Slaghund scorches the ground with every step, and leaves a trail of fire in its wake. Investigation rolls to track its location are made with advantage.

During combat, the Slaghund leaves a trail of fire behind it each round it moves. A flammable object (such as grass, cloth, or wood) trampled by the Slaghund instantly ignites. A 5-foot cube exposed to its fiery tracks burns away in 1 round, dealing 2d4 fire damage to any creature that starts its turn in the fire.

Multiattack. The Slaghund makes two attacks with its claws.

Matchstick Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 5) slashing damage plus 4 (1d8) fire damage. On a hit, the target must make an additional DC14 Dexterity save. On a failure, the target creature's armor or clothing ignites.

At the start of each of the Slaghund's turns, all creatures wearing ignited armor take 1d6 fire damage as well as a permanent and cumulative −1 penalty to the AC the armor offers. Armor reduced to an AC of 10 or a shield that drops to a +0 bonus is destroyed. Affected creatures can spend an action to douse the flames (using water, dirt, etc.) and end this effect.