Konami have sadly gutted Mystic Mine as it used to be (which regardless wasn't good, but still an enjoyable bit of cheese in this format) so you have to really think about how to build it with the additional limitations. You can really go one of two ways; Morganite Stun, or splashing the Runick engine. Runick I believe has better potential but for now we're keeping with this version of the deck. Owl of Luck is ONLY here because it's a terraforming on legs. It's an awful card, but we have to get to Mine somehow bar drawing it.
Morganite Cards let you draw more of your deck (which is good for getting to Mine, obviously) while also removing cost for your Solemns in the form of Iron Thunder. Side includes some fun stuff like Pop-Up (which acts as a less-good but still strong Metaverse) alongside generic going second tools.