exile card from graveyard mtg Cemetery Tampering Whenever Graveyard Glutton enters the battlefield or attacks The 44 Best Graveyard Hate

Caesar leans into making a lot of little creatures fast taking advantage of Anim Pakal, Myrel, and tried and true Darien and really showcases on blacks desire for sacrifice and reds need for Burn

Players can't take any other actions until you're done casting the spell

If The Darkness Crystal leaves the battlefield at the same time as one or more nontoken creatures an opponent controls would die, those creature cards will be exiled and you'll gain 2 life for each of them

For full details on what you can do, check out the Scryfall Syntax guide

You can cast it without paying its mana cost or put it into your hand

This means that you will move directly from the end of combat step of one combat phase to the beginning of combat step of the next one