Level 17 Heavy Strike Marauder^3.21

Notes

Decoy Totem for tough mobs/bosses to draw aggro. Heavy Strike for single target DPS. Endurance Charges and Chieftain Ascendancy give 
ample survivability. Drop a 50 stage War Banner to burst down heavies (eg Crucible). Can run whatever aura you like.

Act 1 Priorities: Weapon/Gems -> Iron Rings -> Med. Life Flasks -> Jade Amulet

After Act 1, the only gear you really need is vendor recipe for 2H maces (normal mace + magic/rare/unique rustic sash + blacksmith whetstone)
which adds % increased phys damage.

Accuracy is the natural weakness of this build. The easy fix is Resolute Strikes. It's possible to run Precision, but this leads to mana issues using
War Banner and another 50% aura reservation (eg Determination/Pride/Purity). 

Check PoB and use the Configuration -> Enemy Stats -> Level field to find your level and how much you acc need (should be above 90% hit chance). 

Versatility and War Banner provide enough accuracy until Act 3. After that, you need Resolute Strikes or lots of accuracy. 
Gloves and helmets with acc can help. I use a filter to check all equippable magic gloves/helmets for T1/T2 acc rolls. 

Before going lab, make sure to have Determination available. It's extremely helpful for traps and Izaro's slams, which do physical dmg.