Item: Blade of Four Energies (Greater)

This +3 greater striking shifting shortsword is formed of rapidly vibrating air and magical energy, though it uses the same statistics as iron. The wooden hilt is adorned with four gems, representing the energies of acid, cold, fire, and electricity, that sparkle in sequence at random intervals.

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Activate f Interact

Frequency once per round

Effect You draw magical energy from one of the gems. Roll 1d4. Until the start of your next turn, the weapon gains the corresponding rune:

1. Greater Corrosive,
2. Greater Flaming,
3. Greater Frost, or
4. Greater Shock.

@UUID[Compendium.pf2e.equipment-effects.Item.Effect: Blade of Four Energies]

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Activate 2 command, envision

Frequency once per day

Requirements The blade has an energy rune from the first activation

Effect You call upon the energy stored in the blade to explode outward. The blade of four energies casts a 7th-rank spell that depends on the active rune:

1. Acid Arrow for corrosive,
2. Fireball for flaming,
3. Cone Of Cold for frost, or
4. Lightning Bolt for shock.

The DC for these spells is 38 and the spell attack modifier is [[/r 1d20+28 #Spell Attack Roll]]{+28}.