What it does
Landwalk (like islandwalk, swampwalk, mountainwalk) makes a creature unblockable as long as the defending player controls a land of the named type. If your opponent has at least one Island, your islandwalker can't be blocked by anything that turn—the creature simply slips through unblocked.
The biggest misconception is that landwalk depends on basic land names not colors. It checks land types, so any permanent with the "Island" type—including nonbasics like Tropical Island or a dual land—triggers it. Also, landwalk only grants evasion; it doesn't prevent damage, removal, or other interaction. The creature can still be killed, blocked by nothing, and dealt with at instant speed.
In Commander, landwalk is unreliable since you face three opponents with varied lands. It shines when paired with effects that give your opponents' lands a type (e.g., "all lands are Islands"), turning a single landwalker into a guaranteed every-turn threat.













