How to Play Dimir Zombies

0) Mill cards and increase your graveyard
1) Gain the ability to cast from your graveyard
a) Inifinite - Liliana, Untouched by Death or Gravecrawler
b) Gisa and Geralf or Havengul Lich
2) Reduce Zombie Cost
a) Free with Rooftop Storm
b) Less with Undead Warchief, Bontu's Monument, Herald's Horn or Nightscape Familiar
3) Sacrifice outlet
4) Win Conditions - Sacrificed creatures direct damage, generate zombies, mill or add counters