Description
Gain a Protector's Vow. Protector's Vow grants its holder 20% additional Mana from all sources and 200 max Health.
Promised Protection enables
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Grants the unit additional maximum HP, either flat (like +150 Health) or percentage (like +6% max Health). It comes up whenever you stack Giant's Belt items, pick health-boost augments such as Giant and Mighty, or run the Old Growth trait, which permanently raises your strongest Old Growth champion's max Health every time an enemy dies near it. For the cross-round permanent stat-stacks angle specifically, see the dedicated permanent stat-stacks page.
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The unit-level resource that gates ability casts — champions cast once their mana bar fills, so low-mana units cast more often than high-mana ones. Spear of Shojin (mana per attack) and Adaptive Helm (amplifies Mana from all sources) push casts faster, alongside starting-mana augments.