About:

A perfectly ordinary iron sword, just slightly darker than most.

Refinements:

Upon causing an Overloaded, Superconduct, Stellar-Conduct, Electro-Charged, Quicken, Aggravate, Hyperbloom, Lunar-Charged, or Electro-infused Swirl reaction, ATK is increased by 20% for 12s.

Upon causing an Overloaded, Superconduct, Stellar-Conduct, Electro-Charged, Quicken, Aggravate, Hyperbloom, Lunar-Charged, or Electro-infused Swirl reaction, ATK is increased by 25% for 12s.

Upon causing an Overloaded, Superconduct, Stellar-Conduct, Electro-Charged, Quicken, Aggravate, Hyperbloom, Lunar-Charged, or Electro-infused Swirl reaction, ATK is increased by 30% for 12s.

Upon causing an Overloaded, Superconduct, Stellar-Conduct, Electro-Charged, Quicken, Aggravate, Hyperbloom, Lunar-Charged, or Electro-infused Swirl reaction, ATK is increased by 35% for 12s.

Upon causing an Overloaded, Superconduct, Stellar-Conduct, Electro-Charged, Quicken, Aggravate, Hyperbloom, Lunar-Charged, or Electro-infused Swirl reaction, ATK is increased by 40% for 12s.

Sources:

Enemies:

Reserved space