Rideable Mantis

Saddle is an activated ability. “Saddle N” means “Tap any number of other untapped creatures you control with power N or greater: This permanent becomes saddled until end of turn. Activate only as a sorcery.”

Saddled is a designation that has no rules meaning other than to act as a marker that spells and abilities can identify. Only permanents can be or become saddled. Once a permanent has become saddled, it stays saddled until the end of the turn or it leaves the battlefield. Being saddled is not a part of the permanent’s copiable values.

A creature “saddles” a permanent as it’s tapped to pay the cost to activate a permanent’s saddle ability.