In my experience in the past while playing Magic: the Gathering Standard format, one of the impactful gameplays is how people cheat huge and devastating creatures into play/battlefield. Also, a bonus is that those creatures get to have enter-the-battlefield effects which makes them worthy even if you were able to destroy them on the spot. Having those costly mana costs is no problem as they only use reanimation spells to get them online and just plainly win from there. I can say that it is one of the pillars of the Magic: the GAthering gameplay as Wizards still continue to print newer versions of these reanimate spells.