Bloodcrazed Paladin

• WOTC Official Reminder Textofficial rules
  Flash — You may cast this spell any time you could cast an instant.

• WWizards of the Coast2017-09-29
  Official Ruling
  Bloodcrazed Paladin's last ability counts all creatures that were put into any graveyard from the battlefield this turn, including token creatures and noncreature cards that were creatures as they left the battlefield. It doesn't check whether any of them are still in graveyards.
• WWizards of the Coast2017-09-29
  Official Ruling
  Bloodcrazed Paladin's last ability won't count creatures that were put directly into a zone other than the graveyard, perhaps because of a replacement effect (for example, a creature that was exiled instead).

Rulings via Scryfall