Mortar Cannon
Raise a cannon Ballista Totem which uses socketed Grenade Skills, with significantly improved Cooldown Recovery Rate.
Good option that performs well in the right setup or as a levelling skill.
Gem Effects
Mortar Cannon
Totem duration is 8 seconds
Limit 1 Totem
Totem gains +(0-75)% to all Elemental Resistances
Totem gains +(0-35)% to Chaos Resistance
Support
Supported Grenade Skills have 100% increased Cooldown Recovery Rate
Supported Skills have 50% less Attack Speed
Supported Grenade Skills deal 50% less Damage
Requirements
Best Support Gems for Mortar Cannon
Ranked by synergy — the game won't tell you which combo deals the most damage
How to Use Mortar Cannon Effectively
Practical tips you won't find on the tooltip
Totem Strategy
Totems use your offensive stats but act independently. You can dodge boss mechanics while your totems deal damage.
Duration Matters
Duration scaling extends effect uptime. Less recasting = more time dealing damage. Invest in skill duration passives.
Attribute Planning
Requires 86 Str at max level. Plan your passive tree and gear to meet this — don't get stuck unable to level your main skill.
Alternatives to Mortar Cannon
Similar skills — which one fits your build better?
Consume 3 Endurance Charges to Raise a Totem that uses socketed Mace Skills. Can
Consume any combination of 3 Power and/or Endurance Charges to raise a Totem tha
Each of your Totems will summon an Ancestral Spirit Minion to fight for you. If
Deploy a Ballista Totem that rains down a salvo of Pinning, Maiming bolts.
How to Get Mortar Cannon
Use an Uncut Skill Gem to obtain Mortar Cannon. These drop from enemies or can be purchased from the gem vendor once unlocked through the campaign.