Rulings

• 2023-10-13
  Once an ability that causes a creature to explore begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the exploring creature after you reveal a nonland card but before it receives a counter.
• 2023-10-13
  If no card is revealed, most likely because that player's library is empty, the exploring creature receives a +1/+1 counter.
• 2023-10-13
  If a resolving spell or ability instructs a specific creature to explore but that creature has left the battlefield, the creature still explores. If you reveal a nonland card this way, you won't put a +1/+1 counter on anything, but you may put the revealed card into your graveyard. Effects that trigger "whenever a creature you control explores" trigger if appropriate.
• 2023-10-13
  Unlike other creature types in Magic that are each only one word, the two words "Time Lord" represent a single creature subtype. Time Lord is the only two-word creature type.
• 2023-10-13
  Neither "Time" nor "Lord" are creature types. Some older cards were printed with the subtype "Lord," but all of those cards have updated Oracle card text that removed that type.
• 2023-10-13
  If an effect instructs you to choose a creature type, you may choose Time Lord.