Second, knowing that almost nothing is guaranteed, what percentage are you willing to accept as a minimum
You can see that in their records for the first set that was printed in nine languages, 4th Edition , that nothing seems to show up in that many prints, and its usually more like seven
While I tend to prefer my 4 drops to be game closing power houses and Teysa is more of a value card and synergy buff the fact that she can make so much happen with so little and how perfectly themed she is for so much of this deck I am more than happy not just playing Teysa but warping my deck somewhat to suit her
The first stab at this slot was a reprint: Xathrid Necromancer (version #1) 2B Creature Human Wizard 2/2 Whenever Xathrid Necromancer or another Human creature you control dies, create a tapped 2/2 black Zombie creature token
You cant really go wrong, as such, but consider ease of casting and the density of power three or four creatures, and then density of token production