Spell Chip Comparison: Which Chip When?
All three Kernel Hearts spell chips compared on role, KB stacking rules and cost per fight, so you never carry the wrong loadout.
Published September 18, 2026 · Last updated September 18, 2026
Quick Answer: Which Spell Chip When?
Single-target Spell is your Floor 1 workhorse — it is never wrong. Area Spell earns its 48KB cost exactly once per fight: the Floor 2 Guardian phantom phase. Defense Chip is the second-phase survival tool. The KB budget is the real constraint, not the chip availability.
| Chip | Role | KB Cost | When |
|---|---|---|---|
| Single-target Spell | Focused damage | 16KB | Floor 1 default |
| Area Spell | AOE / phantom clearing | 48KB | Floor 2 Guardian |
| Defense Chip | Damage reduction | 32KB | Floor 2 second phase |
Chips do not stack with each other — swapping an Area Spell for Single-target replaces it entirely. Plan your loadout before the fight.