The History of Schemes in MTG Schemes were introduced to MTG in the first Archenemy product in 2010, and back then, it was the first official WotC product to support multiplayer MTG
This is true even if the card you reveal has a mana value too great to be exiled or you reveal a card you could exile but choose not to
Here, we're looking not just for large numbers, but also additional abilities that enhance your army , sneak more creatures onto the battlefield, or provide great flexibility in how they're played
Even if the reanimation spell has limitations, if it can sneak something like Atraxa, Grand Unifier or Griselbrand into play for just a turn, the spell will see play
In these cases, any activated or triggered ability that references information about the source because the effect needs to be divided checks that information when the ability is put onto the stack