Original idea: DrWord. Click here to go to the original source in Reddit.

This is the updated version monster with multiple attack on skill, cool down applied (easy obtain from MS and SD)

1st Skill with multiple attack

Kobold Bomber(3x)

Nine-tailed Fox (3x)

Magic Knight (3x)

Oracle (3x)

Pierret (2x)

Vampire (2x)

Barbaric King (2x)

Neostone Agent (2x)

Lizardman (2x)

Neostone Fighter (2x)

Cow Girl (2x)

2nd skill with multiple hit (3-5) 2-3 turn cool down when maxed

Low Elemental (4x) 2cd

Serpent (3x) 2cd

Lapis, Water Magic Knight – (4x) 3cd

Lucasha, Fire Harpy – (4x) 2cd

Zibrolta, Fire Kobold Bomber – (3x) 3cd

Colleen, Fire Harpu – (3-4x) 3cd

Rigel & Fuco, Water & Wind Lich – (4x) 2cd

Su & Yen, Water & Wind Rakshasa – (3x) 4cd

Shimitae, Wind Sylph – (3x) 4cd

Luer, Water Phanton Thief – (3x) 3cd

3rd skill with multiple hit (4-6) 3-5 turn cool down when maxed

Kung Fu Girl (4x) 4cd

Sia, Light Harpu – (6x) 4cd

Julie, Water Pierret – (6x) 4cd

Shihwa, Fire Nine-tailed Fox – (5x) 3cd

Ellin, Water Amazon – (4x) 4cd

Izaria, Water Succubus – (4x) 4cd

Orochi, Wind Ninja – (6x) 4cd

Gildong, Water Taoist – (4x) 3cd

Roger, Wind Bounty Hunter – (4x) 4cd

Sophia, Wind Pierret – (5x) 3cd

Seren, Dark Harpu – (4x) 3cd

Lisa, Fire Neostone Agent – (4x) 4cd

Walter, Wind Viking – (5x) 5cd

Iselia, Fire Fairy – (4-6x) 4cd

Kacey, Water Pixie – (4x) 4cd

Lucasha, Fire Harpy – (6x) 4cd

Selena, Wind Succubus – (5x) 4cd

Zibrolta, Fire Kobold Bomber – (4x) 4cd

Fynn, Water Imp – (4x) 4cd

Hwahee, Fire Sky Dancer – (6x) 4cd

Liesel, Water Vampire – (4x) 4cd

Hina, Wind Amazon – (5x) 4cd

Shi Hou, Water Monkey King – (4x) 4cd

Yaku, Water Imp Champion – (5x) 3cd

Stella, Water Assassin – (7x) 4cd

Okeanos, Fire Sea Emperor – (5x) 4cd

Sera, Water Cow Girl – (6x) 4cd