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Froth Psynergy series

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Froth Spiral being cast in Dark Dawn

Froth, Froth Sphere, and Froth Spiral are a series of Mercury Psynergies featured throughout the Golden Sun series. The Froth Series is believed to be the equivalent of the Thorn Psynergy series.

Basic Characteristics[edit]

Froth, Froth Sphere, and Froth Spiral are offensive, ranged Psynergies. The total damage inflicted is determined by comparing the caster's Mercury Power to the target's Mercury Resistance and using this number to modify the base power of the particular Psynergy in use.

Froth
Froth.gifFrothDD.gif
Star mercury.gif Mercury 5 PP
Range 3.gif
"Attack with frothing bubbles." (GS-TLA)
"Strike with frothing bubbles." (DD-present)
Attacks up to three enemies with a base power of 28.
Froth Sphere
Froth Sphere.gifFrothSphereDD.gif
Star mercury.gif Mercury 12 PP
Range 5.gif
"Attack with frenzied bubbles." (GS-TLA)
"Strike with frenzied bubbles." (DD-present)
Attacks up to five enemies with a base power of 65.
Froth Spiral
Froth Spiral.gifFrothSpiralDD.gif
Star mercury.gif Mercury 31 PP
Range 5.gif
"Attack with a bubble vortex." (GS-TLA)
"Strike with a bubble vortex." (DD-present)
Attacks up to five enemies with a base power of 150.


Visually, each stage of the Froth series features a group of bubbles forming near the caster and striking the targets. Upon impact the bubbles transform into a blue colored spiral figure. The number of bubbles and spirals increases with each successive stage.

Damage Calculations[edit]

Elemental Power attacks such as Froth, Froth Sphere, and Froth Spiral use a set base power as the base damage to be modified. For example, the base power of Froth Spiral is 150. Thus, an unmodified Froth Spiral would do around 150 points of damage.

Attacks from each stage of the Froth series take this base damage value and uses it in the following equation:

final damage = (base damage) * (1 + (User's Mercury Power - Enemy's Mercury Resistance) / 200)

To word this in prose, Froth, Froth Sphere, and Froth Spiral take the base damage of the particular attack, and then modify it by how much higher or lower the user's Mercury Power is than the target's Mercury Resistance. The difference between the user's Mercury Power and the user's Mercury Resistance is then divided by 200, then 1 is added to this, resulting in what can be called the "elemental damage multiplier". This number is what the Psynergies' damage is multiplied by.

Froth Spiral being cast in the GBA games.

For example, if an Adept with a Mercury Power of 150 casts Froth Spiral on a monster with a Mercury Resistance of 50:

  • damage = (base damage) * (1 + (Power - Resistance) / 200)
  • damage = (150) * (1 + (150 - 50) / 200)
  • damage = (150) * (1 + 100 / 200)
  • damage = (150) * (1 + 0.5)
  • damage = 150 * 1.50
  • damage = 225

Therefore, a Froth Spiral cast under these circumstances would deal approximately 225 points of damage to the targeted enemy. Since Froth Spiral is a ranged Psynergy, adjacent targets take a percentage of the total damage, with the percentage decreasing as distance from the main target increases.

Availability[edit]

The Froth series is available to the Mercury version of the Seer class series, and the Medium class series. Thus, it is available to Mercury, Venus, and Jupiter Adepts. Mercury Adepts generally require large amounts of Venus Djinn to access the series. Non-Mercury Adepts require varying numbers of Mercury Djinn. Both classes learn Froth at Level 2, Froth Sphere at level 14, and Froth Spiral at Level 40.

Analysis[edit]

General: The Froth series is weaker than many endgame Mercury series, such as the Prism, Ice, and Cool series. However, it is usually available much earlier, when its power is useful. Despite its lower power, it is the strongest series available to both the Seer and the Medium, and is important for inflicting damage should either of those classes be in use. It should be noted that the series is the strongest Power-based Mercury series available to Venus Adepts, barring the use of Item-dependent classes in The Lost Age.

Enemy uses[edit]

Like many Psynergies available to Isaac and Felix's party, Froth is also used by enemies and monsters. A list of enemies capable of accessing the series follows.

Froth[edit]

Froth Sphere[edit]

Froth Spiral[edit]

Mercury Psynergy in Golden Sun and The Lost Age
Elemental Base Damage Blue DragonCool seriesDouse seriesFrost seriesFrost CardFroth seriesIce seriesPrism series
Elemental Phys. Attack Call ZombieCutting Edge / Plume EdgeDiamond Dust / Diamond Berg
Support BreakCure PoisonElder Wood setPixie setPly seriesRestoreSuccubusWish series
Utility AvoidCloakDouseFrostLiftParch
Mercury Psynergy in Dark Dawn
Elemental Base Damage Cold Snap seriesCool seriesDouse seriesFroth seriesIce seriesPrism series
Elemental Phys. Attack Cutting Edge / Plume EdgeDiamond Dust / Diamond Berg
Support BreakCure PoisonPly seriesRestoreWish series
Utility AvoidCold SnapDouseInsight
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