History:Aquatic Heart

Main article: Aquatic Heart

• 1.5.1.001: Removed Ice Shield Cooldown debuff; it now appears on the cooldown rack.

• 1.5.0.001: No longer Revengeance-exclusive.

• 1.4.5.002: Fixed Ice Shield buff displaying incorrect percentages.

• 1.4.5.001:
  • Renamed from "Siren's Heart" to "Aquatic Heart".
  • Renamed "Siren (Blue)" to "Water Elemental" and "Siren Speed" to "Ocean's Blessing".
  • No longer grants defense, life regeneration, or creature detection, and no longer provides Town NPC shop discounts.
  • Resprited it, its Water Elemental, Ocean's Blessing, and Ice Shield buffs, and its Ice Shield Cooldown debuff.
  • Removed the green variant.

• 1.4.3.001: Now increases Abyss light level by 1.

• 1.4.2.103: Fixed Ice Shield buff's description saying the buff absorbs 20% damage instead of 15%.

• 1.4.2.101: Nerfed Ice Shield's damage reduction boost from 20% to 15%.

• 1.4.2.001:
  • Nerfed defense boost in Hardmode from 10 to 5, and defense boost post-Moon Lord from 15 to 5.
  • Resprited buff icons.

• 1.4.1.001:
  • The Siren buff no longer gains extra life regeneration in Hardmode.
  • Fixed Ice Shield (buff)'s description still saying that the buff reduces damage by 50% instead of 20%.

• 1.4.0.002:
  • Both variants' Ice Shields now increase damage reduction by 20% instead of 25%.
  • Both variants now emit an orange light instead of a green one.

• 1.4.0.001: Added the line "Greatly reduces breath loss in the abyss" to the tooltips of both variants.

• 1.3.4.101: Resprited the Blue Siren and Green Siren buffs, and both equipped sprites.

• 1.3.3.011: Resprited.

• 1.3.2.001:
  • Now only provides an NPC shop discount in Hardmode instead of after defeating Skeletron.
  • Nerfed defense boost in Hardmode from 15 to 10, and defense boost after defeating Moon Lord from 20 to 15.
  • Ice shield now regenerates after 30 seconds instead of 1 minute.

• 1.3.0.001:
  • Nerfed Siren Speed movement speed boost from 25% to 15%.
  • Several effects have been locked behind Skeletron:
    • The player now only gains 1 defense and no life regeneration before defeating Skeletron, but will gain 5 defense and 1 life regeneration after defeating Skeletron.
    • Discount Card effect, Siren Speed, Gills effect, and Flipper effect are now locked behind Skeletron.

• 1.2.4.002: Resprited the Siren (Blue) buff.

• 1.2.4.001:
  • Ice Shield Cooldown now lasts 60 seconds instead of 30.
  • Now has a "Revengeance drop" tooltip line.

• 1.2.3.007: Now grants extra life regeneration and defense in Hardmode and after defeating Moon Lord.

• 1.2.3.006: Introduced.