Double-checking the calculations for the Anvil and the Mirror I have not found any glaring bugs.
The Anvil's slightly higher uptime (faster proc after the ICD is over) gives it a slightly higher +AP effect overall, but the loss of 85 crit rating puts it squarely below the Mirror at a 60 dps loss.
It is currently spelled incorrectly in the sheet (which will be fixed next release) but if you use the custom trinket option be sure to input the stats of the Anvil correctly.
Special Type: On Hit
Duration: 10
Cooldown: 45
Proc Chance 10%
Min Damage 0
Max Damage 0
Can Crit? No
And as the effect +1000 AP
EDIT:
In case the 'can crit?' option confuses someone, it's an option in the version v83d:
- Gronnstalker Boots added again
- Elixir of Accuracy added
- Added setting to have Shot Rotation Test automatically redone if you make changes to the shot priority queue (default=No)
- Custom Trinkets that deal damage now have an option to factor in your crit chance for extra damage.
- Corrected Anvil of Titans spelling