Generally speaking, though, I don't think that any one is more important than the other two
#19: Damnation Wrath of God was #22 on the white list
The only thing it has going for it is that its a massive body with trample, but youd be playing green if you wanted that in the first place
Every time your horrors deal combat damage, opponents mill that much, and at your end step, you can steal something from their graveyard that hit the yard that turn
Black and green have their fair chunk of indestructible baddies and, finally, blue and red boast pretty minor features
Upticking a walker is already putting you ahead because that -6 emblem should be lights out in most situations, so it really shouldnt need much additional sweetening