Use Plague Wards to control creep equilibrium and deny enemy vision while harassing the lane.

Venomancer farms with Plague Wards, so even an underfarmed build contributes massive teamfight damage.

He flexes between positions 2 through 5, from hard support laying vision to greedy pushing machine.

Plague Wards destroy summons and illusions, making him a nightmare for Broodmother and Phantom Lancer lineups.

Venomous Gale zones out position dependent heroes, so target Sniper and Crystal Maiden before they set up.

Poison Nova punishes clustered teams, so time it when enemies commit instead of spreading out.