Gallis the Star Beast OTK

This combo was suggested by Bahamut84 on youtube. It is a 3 card combo that can potentially FTK, the cards are Gallis the Star Beast, Koa'ki Meiru Doom, and Genex Ally Birdman.

Monster Cards

 * Gallis the Star Beast
 * Koa'ki Meiru Doom
 * Genex Ally Birdman

How it works
When creating the deck, you must make sure you have no Spells or Traps in your deck, only Monsters.

Normal summon Koa'ki Meiru Doom. Then, activate Gallis the Star Beast's effect, dealing damage and Special Summoning it (this is why your deck must be all monsters). Activate the effect of Genex Ally Birdman by returning Gallis back to hand as a cost. Koa'ki Meiru Doom negates DARK-monster effects (without destroying it), so Genex Ally Birdman stays in hand. Repeat the process with Gallis the Star Beast and Genex Ally Birdman.