(11/17/2017) If another triggered ability during your upkeep causes you to sacrifice a creature, such as that of Lord of the Pit, you won't be able to target it with Sheoldred's triggered ability as that ability is put on the stack
Splendid Genesis falls into the latter category
Cast Skate to double Saheeli's loyalty and then ultimate her, making a copy of everything including Saheeli and Skate
My hunch is a cautious nope the case's ceiling is huge (the battle is mostly a dead draw in the late game, while the case never is), but the floor is awful
Finality counters keep the card from being too recursive or broken, and its expensive to get into play, but the effect is worth having around in typal decks that focus on larger creatures, like giants or angels
Your opponents will have a hard time ever paying the required costs if they dont have any lands