exile card from graveyard mtg Cemetery Tampering it becomes day next turn.) 10 Useful Graveyard Hate Cards

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

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

Cheap counters like Arcane Denial or Counterspell are incredible with Talrand

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