Ascendancy and Passive Tree Investment:

Your Warbringer Ascendancy will provide essential bonuses to totem survivability and damage. Focus on Path of exile currency obtaining the Ancestral Spirits and Wooden Wall nodes to ensure your totems have both offensive power and your character is more resilient.

As you progress through the passive skill tree, aim for totem-centric nodes such as Carved Earth, Ancestral Artifice, and Devastation to enhance your damage and totem effectiveness. Investing in life, mana regeneration, and AoE damage nodes will be crucial for keeping your totems alive and maximizing their output.

Maximizing the Build's Potential with Currency:
Early Game: Focus on acquiring low-cost gear to level up while ensuring you don't run out of mana. Use your currency to craft essential resistances and mana regeneration mods on items.

Mid-Game (Act Three and Cruel): Start investing in fossils and essences to craft higher-tier gear that boosts your totem and AoE damage. Exalted Orbs can be used to add powerful modifiers to your gear, especially on weapons or rings. Try to craft or purchase a rare two-handed weapon for significant damage increases.

Endgame (Merciless and Beyond): By now, your focus should be on obtaining high-tier rare items with totem and mana regeneration bonuses. Using Divine Orbs to perfect your gear rolls will help you maximize your damage and survivability. With high-end currency like Vaal Orbs, you can corrupt your gear for POE currency for sale additional powerful mods.