[quote=@NightmareInd]
[@Ammokkx] Actually, since the person that Horakhty SPECIAL Summons wins, it will become useless. Also, in my idea I was including win conditions of Effect Monsters as Effects as well.
[/quote]

[u][i]Win conditions are not effects. You can not stop a win condition.[/i][/u]

This is a basic rule.

The setup required for a win condition can be an effect that you can negate, but once the condition has been fulfilled it cannot be stopped.

EDIT: I do admit to being wrong about Horakthy, though.