Passive: Scoring a takedown on an enemy ward summons a friendly Zombie Ward in its place (10 second assist timer). If the brush where you killed the enemy ward already contains an allied ward, you instead gain a Zombie Ward in your Trinket Slot that can be placed at any location within the next 30 seconds.
Zombie Wards grant sight over 1100 units, are visible to the enemy team, have 1 health, last for 180 seconds and don't count towards your ward limit.
Additionally, your own wards will summon a Zombie Ward when they time-out. This does not occur if they are replaced due to the ward limit.