Restless Giant

Gargantuan is a Support Witch Doctor skill unlocked at level 18.

A Crimson Rune placed in it will alter the skill in the following way.

[e]

When the Gargantuan encounters an Elite enemy or is faced with 5 enemies nearby it enrages for 15 seconds gaining:
• 50% movement speed
• 50% attack speed
• 200% physical damage

This effect cannot occur more than once every 120 seconds. Elite enemies include Champions, Rares, Bosses and other players.