Staldra

Staldras appear as common enemies in SS undefined. They can be found in Skyview Temple and Lanayru Mining Facility.

Characteristics and Weaknesses
Staldra are three-headed serpents, and true to their name, they are skeletal ("Stal-") s, able to regrow their heads when one is cut off.

Upon encountering an enemy, Staldras will confront them, moving their heads in various patterns before lunging at their foes. Their heads will align themselves in a horizontal, diagonal or an uneven position. Link can only defeat them by destroying all three heads at once. They cannot be defeated when their heads do not follow a line and will instead simply regenerate whichever heads that have been destroyed.

An easy way to defeat Staldras is to Shield Bash it when they lunge, then attack while they are stunned. It is possible to kill Staldras with Bombs if all the heads are looking in the direction of the Bomb. Upon defeat, Staldras will drop a single Red Rupee.

Etymology
Staldra is a portmanteau of Stal, a prefix used to denote skeletal creatures, such as the Stalfos, and Hydra, a multi-headed serpent-like beast from Greek myth that regrew its heads.