[Kameron8]

If you have Evasion in the Rogue class and Flottement in the Duelist class, you will 'dodge' area of effects. However, because some of them seem to grow out from the center, it causes you to 'dodge' into the spell again, and again, and again, until you finally get out of the area. This results in taking a boatload of damage, like so.

This occurs with things like sear, air pressure, famuiga, and wind slasher. It will not hit more than once if you target them on the edge of the spell, because of the 'growing from the center' effect.

[Snake]

Don't forget to include Youkai magic that blows forward in a line. Also, Fire Breath.

[Neus]

Need a list.

[Snake]

(Non-piercing projectiles are all fine, 'Jet'-like skills are stacking as you step away, most of the AoE stack-damage happens when your FlotterEnemy is in the bullseye* of the circle)
Miu, Famiunga, Air Pressure* // Mage
Sear*, Wind Slasher // Evoker
Black Bubble* // Hexer
Acid Jet, Fire Jet, Ice Jet //Summoner
Crawling Spikes, Expanding Ice //Verglas
Roundtrip //Soldier
Flamethrower //Engineer
Kagekiri, Toiken, //Kensei

[Soapy]

Hyattr's Fire Breath also hits repeatedly.