[quote=@Scarifar]
<Snipped quote by dragonmancer>

A nuke effect like that is too powerful, especially given how little summoning conditions are needed for it. A Totem Dragon could easily provide it with what it needs. Truth be told, I'm not sure what can be done to improve it in terms of balance.
[/quote]
[hider=Cards to compare it to]
[img]http://vignette1.wikia.nocookie.net/yugioh/images/3/31/EvilswarmExcitonKnight-MP14-EN-ScR-1E.png/revision/latest/scale-to-width-down/300?cb=20140829075651[/img]
[img]http://vignette2.wikia.nocookie.net/yugioh/images/9/95/JudgmentDragon-SDLI-EN-C-1E.png/revision/latest/scale-to-width-down/300?cb=20140626065823[/img]
[img]http://vignette3.wikia.nocookie.net/yugioh/images/2/26/SteelswarmHercules-HA06-EN-ScR-1E.png/revision/latest/scale-to-width-down/300?cb=20120728133414[/img]
[img]http://vignette3.wikia.nocookie.net/yugioh/images/f/fe/WorldofProphecy-MP14-EN-ScR-1E.png/revision/latest/scale-to-width-down/300?cb=20140905091901[/img]
[/hider]
Evilswarm Exciton Knight is banned, for what it's worth.

While my opinion is probably meaningless in this context, it needs a nerf but not a huge one.