Plague Engineer is a retro foil reprint that can greatly harm tribal decks, and this thing is worth $30
Seymour is the psychotic main villain of Final Fantasy X , whose plan is to become Sin itself
That means this card, at a baseline without ever flipping it, is at worst a Green Grave Titan
Final Fantasy X White-blue-green counters are a classic staple in Magic deckbuilding and having access to all three here really let us build out a whole deck about moving the counters on the board and leveling up your team
But what's most impressive is that, once you've cast Hildibrand from your command zone, you won't likely need to cast it from the command zone again, sidestepping the whole pesky commander tax that mere mortal commanders have to contend with
You only need other creatures to make it good, which is trivially easy for most Limited decks