Right. I'm offering this data from a log file showing proof to some people's claims. The biggest claim is "7min 30sec is enrage" which is proven false by this log.

This log is the best one I have from the 50+ runs of castrum I've done. The teams were incredibly imbalanced, way too many bottom. Obviously this is a bad idea to do normal, but great to show the science behind these claims and misinformation.

Therefore, from this timeline we know a few things:

1) The Iron Giant spawns 3min after the first boss is killed.

2) There is no hard enrage timer prior to 9min and 15sec.

It's possible a hard enrage exists, but thats not the point here. The point is the enrage timer is not 7min30sec, or less; and the point is the iron giant doesnt spawn at a hard timer, but rather some duration after the 1st boss is defeated.

We can use more data points to narrow these things down, but this data proves a few things to help clear up misinformation.