Given that he's eight mana, and you have to have excess mana to cast the extra spells, it's a little slow
If you're down to 0 Life Cards, you could put it on the top of your Life Card with OP04-040-queen or OP04-112-yamato's effects
Historically one of the great weaknesses of artifact creatures is that they die to every color
UR Murktide, Dimir Ring Control, 5c Creativity & Grixis Deaths Shadow are all seeing more play, and each with their own playset of the single mana spell
Like in 40k itself, the Tyranids represent a relentless and overwhelming force meant to gum up the board with many creatures big and small, but all dangerous
You can tutor up combo pieces like Helm of the Host or run it as an alternative to Go-Shintai of Life's Origin (all the shrines are legendary)