This skill allows you to discharge a spell through your rune cannon, combining the shot and the spell into a single action. The shot, including any successfully activated chained skill effects, occurs alongside the spell.
The target of the shot becomes the target of the spell. The spell's normal range, targeting restrictions, and area of effect are overridden by the rune cannon's range and affected area. If Power Blast increases the affected area of the shot, the spell's affected area expands to match it.
The spell must be successfully cast for Spell Cannon to work. You must make the spell's casting check separately from the Spell Cannon skill check.
If you fail the Spell Cannon skill check, you spend the 4 Soul cost but cannot cast the spell through the cannon. If you succeed at the Spell Cannon check but fail the spell's casting check, you spend the stat costs for both actions, but the spell is not cast. The shot and any successfully activated chained skills still take place.
Spell Cannon uses your Magic Action. You cannot cast another spell later in the same round. The spell must also be capable of being cast immediately. You must have sufficient Runic Speed to cast the spell instantly; otherwise, the spell and Spell Cannon fail.
The spell retains its normal effects and duration when cast through the rune cannon.
Important Interaction Rules
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Healing spells: You can fire healing spells through your rune cannon, but the shot's damage still applies.
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Crafted rune cannon spells: A rune cannon crafted to use a spell contained within a rune stone cannot use Spell Cannon. The advantage of Spell Cannon is that you are not limited to the spell contained within a rune stone; you are limited only by the spells you can cast instantly.
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Power Blast and Magic Grace: If Power Blast increases the affected area, everyone within that area is affected by the spell, including allies. Magic Grace does not prevent this interaction.
Power Blast