Landhome

From MTG Salvation Wiki

Landhome is an obsolete generic keyword ability used in conjunction with a quality such as land type. It was originally a group of abilities (islandhome, mountainhome, and so on) that prevent the creature with the ability from being declared an attacker if the defending player controlled no lands of the appropriate type. Additionally, creatures with landhome are buried if their controller doesn't control any lands of the appropriate type.

It is now printed as two abilities: <This creature> can't attack unless defending player controls a <land type>. When you control no <land type>, sacrifice <this creature>. Like Haste and Vigilance, Landhome was not originally keyworded, but unlike those abilities, it lost its keyword after WotC decided it was 'uninteresting,' and appeared on too few cards.

From the Comprehensive Rules:

Islandhome (Obsolete)
Some older cards were printed with the term islandhome, which means “This creature can’t attack unless the defending player controls an Island” and “When you control no Islands, sacrifice this creature.” Cards that previously had islandhome now simply have the two parts of islandhome written out without using the keyword.

Example Creature that had landhome (using current oracle text)

Gorilla Pack -
Creature - Ape
Gorilla Pack can't attack unless defending player controls a Forest.
When you control no Forests, sacrifice Gorilla Pack.
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