Cavalry Charge is a plain and simple knight tribal deck, though the Esper (white, blue, black) MTG color combination provides a new wrinkle for the tribe
He is vastly better than things like Broodstar with him being an artifact himself and only costing a single blue
Siege still has a lot of potential, but given the rules text, I'd guess effects that don't involve transformation, but a direct punishment for not protecting it, would need a new subtype
They're destined to mill out while you can wander off and do something else
No need to create combos or elaborate plays when a card has the ability to double your tokens outright
Part 5: Human Errors Typos, wrong casting costs, missing power/toughness, mistranslations, and even wrong art