It’s essentially an old Mount Seller from Outlands except that you are running some new cards.
With the lunar eclipse, you can cast possible an extra spell while your mount seller is in play meaning more minions.
The deck cast tons of spells meaning that owls and Yogg will always be active.
The arbor up allows you to buff your mount seller board which can be huge as all minions will gain +2/+1.
Ysera is in the deck for late-game in case your Mountsellers fail.
Personally, I like the fungal fortunes however I do realize that there being 6 minions in the deck there is a good chance you will draw one which is why I have considered removing maybe at least 1 for a Guess The Weight.
Good Luck have fun π