Nacatl War-Pride

Nacatl War-Pride must be blocked by exactly one creature if able.
Whenever Nacatl War-Pride attacks, create X tokens that are copies of Nacatl War-Pride and that are tapped and attacking, where X is the number of creatures defending player controls. Exile the tokens at the beginning of the next end step.

The List

Future Sight

Nacatl War-Pride must be blocked by exactly one creature if able.
Whenever Nacatl War-Pride attacks, put X tokens into play tapped and attacking that are copies of Nacatl War-Pride, where X is the number of creatures defending player controls. Remove the tokens from the game at end of turn.

Salvat 2005

If Nacatl War-Pride has left the battlefield by the time the triggered ability resolves, the tokens will still enter as copies of Nacatl War-Pride.

If Nacatl War-Pride becomes a copy of something else after the ability triggers but before it resolves, the tokens will enter as copies of whatever the ex-Nacatl War-Pride is now. If Nacatl War-Pride became a copy of something else and then left the battlefield, the tokens will enter as copies of whatever it was copying when it last existed on the battlefield.

If it's impossible for Nacatl War-Pride to be blocked by exactly one creature, then the defending player may block it with multiple creatures or may leave it unblocked.

In a multiplayer game in which you're allowed to attack only one player each combat, the new creatures will be attacking the same player as Nacatl War-Pride. In a multiplayer game in which you may attack multiple players, you choose the player each new creature is attacking. It must be a player you're allowed to attack.

Putting an attacking creature onto the battlefield doesn't trigger "When this creature attacks" abilities. It also won't check attacking restrictions, costs, or requirements.

The tokens enter attacking, even if the attack couldn't legally be declared.