Crumble bugged?

[Manuk]

It does not suck at all. Is too good. A single SC can take a castle with no other help than crumble. That´s not nice.

[thejeff]

As I understand it, only if that SC can actually make progress tearing the walls down.

Probably due to the order of events:

Crumble is cast in the ritual spells phase. The walls go down to 0.
Then the defenders build up and the besiegers tear down.
Then, if the defense is 0, the besiegers can storm on the next turn.

In your SC case, if the defenders can rebuild even a little faster than he can tear down, defense will be positive and he can't attack.
If the castle has no defenders, or the SC has Gate cleavers or something, then sure Crumble will help the SC out.

But it doesn't really make sense for an empty castle to be able to hold even a small army off for any time at all.

[Loren]

thejeff said:But it doesn't really make sense for an empty castle to be able to hold even a small army off for any time at all.

I definitely agree. It's stupid to have to send a big army through mopping up the space after a dominion kill just so you can take down the empty castles.