It's far less merry than
The Merriest Spire Combo, but it is also more resilient to
Turn to Seed type effects.
Similar to all other spire combo decks, you must play Spire for the deck to be good. You're looking to play it on turn 4. Post spire, the average cost of your cards is very low, so you can quickly get an overwhelming advantage. You typically play an 8/4 Shimmerpack for a massive one turn attack, but there are multiple ways the game can play out.
It's a pet deck of mine that I just fall back to after making Masters, because it is a blast to play.
I'm glad you are enjoying it.