How to counter Pugna in Dota 2

An exploding pulse deals damage to enemies and structures in the area. Deals 65% damage to structures.

A powerful banishing spell that slows a unit and renders it unable to attack or be attacked. Healing on affected allies is increased, while afflicted enemies take extra magic damage instead.

Pugna places a Nether Ward at the target location. The ward will fire at any enemy hero who casts a spell dealing base damage plus the damage multiplier of the mana spent by the enemy hero.

Pugna can cast spells and use items while channeling. Pugna receives 1.5% spell amplification per destroyed tower.

CHANNELED - When cast on an enemy, Pugna drains health from the target enemy unit to heal himself and granting vision over the target. When cast on an ally, Pugna will drain his own health into his ally.