Biovisionary

• WWizards of the Coast2013-01-24
  Official Ruling
  Token creatures that are a copy of Biovisionary will count.
• WWizards of the Coast2013-01-24
  Official Ruling
  If the ability does trigger, but you don’t control four or more creatures named Biovisionary when the ability tries to resolve, the ability will do nothing.
• WWizards of the Coast2013-01-24
  Official Ruling
  If you don’t control four or more creatures named Biovisionary at the beginning of the end step, the ability won’t trigger.

Rulings via Scryfall