2007-05-01
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.

2007-05-01
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.

2007-05-01
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.

2007-05-01
The tokens enter attacking, even if the attack couldn't legally be declared.

2007-05-01
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.

2007-05-01
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.