Enchantress + Shadow Shaman

Why this works

Setting up a gank with Shadow Shaman is straightforward. His disables like Hex and Shackles give Enchantress a perfect window to stand back and build up a lot of Impetus damage from maximum range. This single-target burst is their main strength, letting them pick off heroes who are caught out of position. The issue is that both heroes are quite squishy and have limited mobility. If their initial target survives the lockdown or gets help, both the Shaman and Enchantress can be easily turned on and killed, especially since Shackles requires him to stand still.

This dynamic leads to a strong objective-taking plan. Dropping Mass Serpent Wards next to a tower, supported by an Enchanted creep and heals from Nature's Attendants, creates a lot of pressure. The problem is that their game plan can be predictable. Teams with good wave clear can stall their push, and lineups with strong initiators can blow them up before the lockdown lands. The entire strategy depends on getting that first pickoff quickly. If they can't secure it, their lack of area-of-effect damage and escape tools makes it difficult to win a drawn-out fight.