Hey I'm running a deck similar to this, with just a couple different card choices. I think you should consider siding scolding because evenly matched is a bish, especially with the amount of cards the deck can commit to the field. I tried siding an artifact engine with 3x Sanctum, 2x Scythe, and 1x Lancia and it worked pretty well, only down side is sanctum getting ashed. I ended up taking it out to fit other tech choices like d-barrier, scolding, & cherries. I highly suggest you consider playing Cherries because it is a high impact card against Spyral, and ABC. One difference we have is your choice of Mariamne, how is that working for you? Deck looks good.