It goes to 55

My version of the 50 power Diogo combo.

The combo works like this:
You play Diogo, give Invoke Destiny. Then you use Celestial Omen to tutor for the Invoke with Destiny, mill most of your deck and use the merchant you are likely to hit to market for Excavator to get lethal. In the case, you don't play enough power to play and activate Excavator immediately you can market for Excavate to buy another turn.

Mulligan:
Look for a hand with a primal merchant plus another merchant and one of each influence.

Edit:
I added 4 Power Stones and more power to deal more damage with Excavator soI can beat early Hojan attacks.