Mana Gem

Strategy and Synergy
Mana gems can commonly be found as rewards from leveling up and also ocasionally appear in the shop. They're pretty straightforward, increasing your maximum mana by 1, which in turn lets the player cast higher-costing spells (such as or ) or expand the mana pool, allowing a reserve to be kept for emergencies.

Several characters begins with fairly low, so the Mana Gem is of great help. Namely, the two heroes with the lowest mana pool are Bullethell Gunner and Kunai Shiso.

Along with, the mana gem is a generic artifact that can fit in any deck and playing style.