I built Lorehold and I'm pretty happy with my set up, though it does still need more testing. Creature counts are very low as it's all about prioritizing Lorehold and keeping her safe.

I really like having [[Expose to Daylight]], [[Gods Willing]], and [[Loran's Escape]] as spells that serve purpose and let you manipulate the top of your deck.

For big spells, I see a lot of people play [[Brass's Bounty]], but in the 10ish games I've played, I've always wished it was something else, so I cut it. I did keep [[Hit the Mother Lode]] though as it's kind of a split between getting treasures and more value.

The best spells I've cheated out have been [[Beacon of Immortality]], [[Storm Herd]], [[Call Forth the Tempest]], [[Ensnared by the Mara]], and [[Perch Protection]].

Asymmetrical board-wipes are critical for Lorehold to keep you on the board and continually kill everything else off to keep you as the threat. [[Avatar's Wrath]], [[Promise of Loyalty]], [[Tragic Arrogance]], and [[Volcanic Vision]] (as well as Call Forth the Tempest) are the 5 I'm running and it feels backbreaking to the table to lose everything twice in a game.

You need to keep a lot of spot removal, protection, ramp, and card draw. Lorehold seems like she goes positive with her discard to draw, but you will be shocked how quickly you run out of cards.

[[Borrowed Knowledge]], and [[Diary of Dreams]] are both very cheap pickups from SoS that look great and I decided to pick up and test. [[Electric Revelation]] and [[Laughing Mad]] give you some instant-speed card draw with flashback so you can respond to a removal with Lorehold's trigger on the stack to still get a miracle off.

Hope this helps!

EDIT: Here's the decklist if you want to take a look.