Living weapon means that Kaldra Compleat will spawn a 0/0 Black Phyrexian Germ token on play and equip itself to that token and because of haste, that token will be ready to fight as soon as Compleat hits the board
If it's an artifact or creature card, you may reveal it and put it into your hand
This will not only make a holo card more special, but also blends in more nicely with the holographic pattern
Of course, for a human typal deck youll need some lords like General Kudro of Drannith and Kyler, Sigardian Emissary, as well as some great human support like General's Enforcer and Katilda, Dawnhart Prime
The bouncelands help the deck a lot, because they can bounce themselves in the late game to guarantee you constant landfall triggers
All this ensures you are continuously pushing damage with a creature that is increasingly hard to deal with