These got a whole new life in Commander, when you could actually start bargaining with them
A couple of specific lands are going to help a lot too, most notably Cabal Coffers to make a lot of black mana, and Nykthos, Shrine to Nyx to use our high mana value (and resulting high devotion)
I remember the shock I felt at the midpoint of Final Fantasy VI when Kefka betrayed the Emperor and cracked the land asunder (and yes, the first time I played I panicked and left Shadow behind on the Floating Continent)
Then, if an opposing creature is a Vampire or has been made one, Olivias five-mana ability can be used to take control of it for as long as she remains in play a subtle nod to her power and influence over Innistrads Vampires
This dragon deals damage to any target when you draw a card, and when anyone casts an instant or sorcery spell , you also draw a card making blue and red perfect since theyre chock-full of them