wotc
If you choose a target creature you own and that creature isn't a legal target as the triggered ability tries to resolve, that ability won't resolve and none of its effects will happen. You won't search for a basic land card.
If you choose a target creature you own and that creature isn't a legal target as the triggered ability tries to resolve, that ability won't resolve and none of its effects will happen. You won't search for a basic land card.
As Sword of Hearth and Home's second ability resolves, the land and the creature will enter the battlefield at the same time.
If the creature you own is a token, it won't return to the battlefield. It will stay in exile and cease to exist after the ability finishes resolving.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Chris Rahn
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.