Shroud

The buff has two levels: Shroud and Perfect Shroud. A champion under any of these buffs cannot be selected as the target of an enemy champion's skill. Note: If all the remaining champions on your team have an active Shroud effect and a Perfect Shroud, the enemy will no longer have any restrictions on target selection. In the case of the base buff, the Shroud effect will be immediately removed if the champion uses a skill that deals damage. With the exception of: Damage dealt by a skill that casts a Shroud; Passive damage; Damage that "does not count as a hit". At the same time, the Ideal Shroud is not affected, no matter what skills the Champion uses. Thus, it allows them to strike with impunity as long as the buff remains active.