The plus is great if you want filtering or have creatures, the emblem gets you farther ahead, and the minus three works great with vigilance creatures, which you happen to have
This card makes your maximum hand size 20, and anytime you attack with two or more creatures, this creature gains +1/+1 and you draw a card
Partner adds an extra wrinkle to the package, effectively allowing you to run two copies of a commander from among the options with partner
Cast spells and draw swords with Legendary Creatures like Gilgamesh, Master-at-Arms and Firion, Swordmaster, or use Summon: Leviathan to control what creatures are on the Battlefield
There's no guarantee that I'll get much out of this, but the right table will build me a pretty nice little Snake & Squirrel army