The combat trick master, Odric, Master Tactician rewards you for playing lots of humans, and can simply make all your creatures unblockable
It rewards you for having a constant exile cards engine, and it goes in line with what the dragon Teval, the Balanced Scale is doing
On the topic of creatures, the blinking theme first brought me to the evoke creatures from Lorwyn/Morningtide: Shriekmaw, Mulldrifter, and Aethersnipe
Not only does this mean you have two creatures to sacrifice, the spirit also comes into play untapped and able to block, unlike almost every other card on this list
Once you reach the 10-land mark, your creatures will get a massive boost