Sorcery speed Village Rites for three makes the black one pretty playable, but the other two I think are less exciting
Squall, SeeD Mercenary Squall, SeeD Mercenary is in excellent knight colors and has a powerful mini-Sun Titan effect that works perfectly with Orzhov cards
For simplicity's sake, I'm representing these in a bullet-point format, but if you're looking for additional effects to round out your lists with some variety, you should consider some of these
Set : At this point youll want to check any cards that you have in play to see if they have effects that mention the beginning phase and activate them
There are a couple of more tame effects (i.e., Crystal Fragments) that are technically DFCs though
We have Bleachbone Verge, Riverpyre Verge, Sunbillow Verge, Wastewood Verge, and Willowrush Verge, and they're all preselling for $7-$8