If an effect says the Beast token attacks or blocks "if able" and you control one or more other creatures that are able to attack or block, you must attack or block with the Beast token and at least one other creature.
Toby, Beastie Befriender
Once the Beast token has attacked or blocked, removing all of your other attacking or blocking creatures won't cause it to stop attacking or blocking.
If you control more than one creature with "This creature can't attack or block alone" they can attack or block together, even if no other creatures attack or block.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Ashley Mackenzie
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
