Invoked

"Eidolon Beast", or "Summon Beast" ( Shōkanjū) in Japanese, is an archetype debuting in Booster SP: Fusion Enforcers.

Design
Design-wise, the archetype consists of "Eidolon Beast" Fusion Monsters who are seemingly Summoned through magic powers by sorcerers. This mechanic might be inspired by the summons of the Final Fantasy franchise, where magic beasts can be summoned during battle to aid the player; incidentally, one of the "Eidolon Beasts", "Raideen", even shares the same name (in Japanese) with a Final Fantasy summon.

Individually, each "Eidolon Beast" represents a different Attribute, with their Fusion Materials being "Aleister the Eidolon Summoner" plus one monster of their specific Attribute, and are named after historical or mythological elements related to said Attribute.

Playing Style
"Terraforming" can search "Reckless Magic Circle", that search "Aleister the Eidolon Summoner" that search for the "Eidolon Summoning Magic" Spell Card, which can banish opposing monsters from the Graveyard as Fusion Materials when Fusion Summoning an "Eidolon Beast" monster.

"Summoning Magic" can help recycling "Aleister", either to use it as a Fusion Material again or for its hand trap effect. Cards like "Dark Eruption" can also be used for the same result.

The "Eidolon Beast" monsters have generally stun and disruption effects, which can become quite troublesome for the opponent if the player manages to gather enough of them on the field. Since their materials are generic monsters, not only the player can use opponent monsters as materials with "Summoning Magic" or "Super Polymerization", but they can also splash all kinds of monsters in the Deck.