Planetarium of Wan Shi Tong is a great card in any deck that aims to ramp up to high mana cost cards, as it can cheat something out for you each and every turn
It's a self-fueling token generator, but it also nabs any discarding you do through other means, making it a fun addition to cycling decks or decks that just do a lot of looting in a game
Doubling Season , Branching Evolution , and Primal Vigor increase the number of +1/+1 counters placed on all of your creatures, which can make your Steelburr Champion and similar cards grow like crazy
But no matter where you stand on the "please compleat me" to "free will is kind of cool" spectrum, March of the Machine has plenty of awesome new cards featuring several awesome new mechanics, so let's take a look
Note: The Gekirin here isnt the Imperial Wrath/Reverse Scale, it also replaces the scale part with basically assault/rampage
Its also a Soldiers-matters deck, so given Im playing both Teleportation Circle and Nahiris Resolve, slotting in Ranger-Captain of Eos is a great option