Flying, lifelink for a double life swing, and then vigilance to hold back and deathtouch to trade up, pretty minor here
Again, youre in Orzhov, so you can throw away your own creatures to drain your opponents
It also allows you to draw a card so you are benefitting from increasing a Strength stat AND replacing the card you just played
If you have the life to spare, Sylvan Library is ready to become a Necropotence proxy
Finally, you can mitigate the damage you take as it comes via creatures like Souls Attendant or Essence Warden, or gain a bunch of life through cards like Exsanguinate and Debt to the Deathless to offset early losses
This Guildmage makes your army a nightmware to block, and it ensures those that double block have a higher chance to eating the dust as well