Their effects revolve around gaining Spell Counters and using them to pay for effects.
Each Pendulum Monster that is a member of this archetype has a Pendulum Scale of 4 and has a Pendulum Effect that can only be activated if you control no cards in your other Pendulum Zone, and which destroys the card itself as part of its effect. These characteristics let them be played similarly to Normal Spell Cards to help build up Spell Counters on the "Mythical Beasts" in your Monster Zones.
*Disclosure: Some of the links above are affiliate links, meaning, at no additional cost to you, Fandom will earn a commission if you click through and make a purchase. Community content is available under CC-BY-SA
unless otherwise noted.