So, here are some defenders to include in these decks: Axebane Guardian, Wall of Mourning, and Crystal Barricade
One can make creatures effectively unblockable by supplying protection and altering colors, and opponents' removal can be made useless in the same way
Mirage and Visions introduced the first white/black cards (that werent also blue), but Circle of Despair, Purgatory (the first WB card to involve paying life), and Righteous War didnt introduce a consistent theme to the color pair
When Richard Garfield introduced typal effects in Limited Edition (Alpha) , they affected all the creatures on the battlefield
Granting Menace to the team on EtB is potent, and having a built-in way to bring it back to play means you can keep reusing the combat trick while ensuring the buff is never far away
Finally, Squirreled Away also does a great job of spreading the card types out so a new player can understand how each one works