Twomerang is a recurring Boomerang ability in the series. When used, the character launches a boomerang from each hand to strike all enemies twice.
In the 3DS Nersion, Morrie learns Swing Both Ways after investing 100 skill points into his Boomerang skill and costs 10 MP to use. It inflicts 120% damage on all enemies twice, but with decreasing damage from left to right. When used, Morrie will create a second spectral boomerang in his left hand and enhance both of them with orange and dark flames before leaping in the air and hurling both of them at the enemies.
Twomerang first appeared in this game, requiring a character to invest 100 skill points into the Boomerang skill. It costs 8 MP to use and will inflict 120% damage on all enemies within range twice.
Erik learns Twomerang for 16 points in his Boomerangs skill set after learning the Power Throw and Metalicker skills. It costs 8 MP to use and hits all enemies for 120% damage twice, but with decreasing damage from left to right.
Swing Both Ways in 'Dragon Quest VIII'.