Another possible build is
-(Max) Gold Grow Terrain dice
-Gold Grow Block & Heal
-Gold Grow Block & Attack
-Silver Block & Boost
-Hollow Mirror
Under the strategy I found this gives turns 1-5 under worst case scenario
1. 17 shield
2. 68 eff. HP
3. 77 eff. HP
4. 110 eff. HP
5. 123 eff. HP
I think this would beat enemy output up to ~80 at 80 Max HP.
The strategy with this build is as follows
M=Mirror
T=Terrain
H=Block & Heal
A=Block & Attack
B=Block & Boost
_=Empty
Alternate between
# # M # #
# _ # _ #
A # B # T
# _ # _ #
# # H # #
and
# # A # #
# _ # _ #
M # B # H
# _ # _ #
# # T # #
If B rolls 3 instead of 2 then put B in the diagonal between A and M, to boost both T and H.