How Gems Work
Gems can be socketed into cards that have open gem slots. Each gem provides a unique modifier to how that card behaves. The Gem Hammer relic unlocks the ability to socket gems.
Attack Card Gems
Best Gems:
Amount Gem — +1 projectile (more hits)
Might Gem — +10% damage per gem
Best Gems:
Amount Gem — +1 projectile (more hits)
Double Damage Gem — Guaranteed crit on first hit
Best Gems:
Decimate Gem — +50% damage to low HP enemies
Might Gem — Massive AoE damage boost
Best Gems:
Area Gem — Larger zone coverage
Duration Gem — Longer active time
Defense Card Gems
Best Gems:
Armor Strike Gem — Convert armor to damage
Armor Gem — +5 armor per use
Best Gems:
Might Gem — Buffed attack deals more damage
Armor Gem — More armor + attack boost
Mana Card Gems
Best Gems:
Draw Gem — Draw extra card
Mana Rebate Gem — 1 mana returned on use
Best Gems:
Countdown Gem — Reduce cooldowns faster
Echo Gem — Repeat effect twice
Special Gems
Evolves weapons when combined with matching evolution group cards.
Only obtained from glowing Bat enemies. Essential for weapon builds.
2x damage on first hit per encounter.
Great for burst damage on bosses.
Card effect repeats once.
Double your card's effect. Broken on high-value cards.