Your job is to find them and mark their locations on your map
Szarel, Genesis Shepherd Running Szarel, Genesis Shepherd means playing lands from the graveyard for endless value
Probably need some more support in this or future sets, to make them standard playable
For instance: if you had three Clues, enough mana, and all the relevant cards exiled under Lazav, you could cast Cackling Counterpart targeting Lazav, hold priority before it resolves, sacrifice a Clue to trigger Lazav to transform him into Marionette Master, hold priority again, sacrifice another Clue to trigger Lazav to transform into Octavia, Living Thesis, hold priority once more, cast Armor of Shadows, let everything resolve, then sacrifice a final Clue
In those cases, the effect of rolling a 6 applies only to his normal ability
Once you finally get to play it, it attacks with haste and buffs all your vampires permanently