Then the maiden bade him cast off his robes and cover his body with fishliver oil, that he might safely follow her into the sea.

Fishliver Oil

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature has islandwalk. (It can't be blocked as long as defending player controls an Island.)

Ninth Edition

Enchant creature (Target a creature as you play this. This card comes into play attached to that creature.)
Enchanted creature has islandwalk. (This creature is unblockable as long as defending player controls an Island.)