Jenny, Generated Anomaly — ruling 1

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.

Jenny, Generated Anomaly — ruling 2

If no card is revealed, most likely because that player's library is empty, the exploring creature receives a +1/+1 counter.

Jenny, Generated Anomaly — ruling 3

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.

Jenny, Generated Anomaly — ruling 4

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.

Jenny, Generated Anomaly — ruling 5

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.

Jenny, Generated Anomaly — ruling 6

If an effect instructs you to choose a creature type, you may choose Time Lord.

Jenny, Generated Anomaly : règles, fonctionnement et interactions (MTG)

Jenny, Generated Anomaly is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Double strike Whenever Jenny deals combat damage to a player, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

How it works : Jenny, Generated Anomaly

Original English text — Wizards of the Coast / Scryfall

#1October 13, 2023· Wizards of the Coast
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.
No other card is named in this ruling.
#2October 13, 2023· Wizards of the Coast
If no card is revealed, most likely because that player's library is empty, the exploring creature receives a +1/+1 counter.
No other card is named in this ruling.
#3October 13, 2023· Wizards of the Coast
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.
No other card is named in this ruling.
#4October 13, 2023· Wizards of the Coast
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.
No other card is named in this ruling.
#5October 13, 2023· Wizards of the Coast
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.
No other card is named in this ruling.
#6October 13, 2023· Wizards of the Coast
If an effect instructs you to choose a creature type, you may choose Time Lord.
No other card is named in this ruling.