Void Failure?

[Enitocin]

>720 golem
Voodoo '720 golem' to 'PREPARE 720', 'CAST AT golem'.
You trace an intricate sign that contorts in the air while forcefully invoking Implosion...
Your spell is ready.
>
You gesture at a bone golem.
A void rips open in the area, Cast Roundtime 3 Seconds.

Any reason why the void didn't open?

[whiteflash]

Many golems are too heavy to be imploded. This may also be the case with bone golems.