Most of these fall into two primary categories of the archetype's monsters: the anime-original members (whose Fusion Monsters that mention named Fusion Materials), and manga (whose Fusion Monsters require generic Fusion Materials, sans "Elemental HERO Terra Firma" and "Elemental HERO Inferno")
You can only use each of the following effects of "Battleguard Cadet" once per turn
for the rest of this turn after this card resolves, you cannot Special Summon monsters, also Special Summon 2 monsters from your Deck, with the same Type, Attribute, and Level as that monster, but with different names from each other and that monster
However, the power lies almost exclusively in the effects of "Ice Hand" and "Fire Hand" and can be taken down easily if one prevents their destructive effects from triggering
An indestructible counter is a keyword counter given to a permanent that grants it the keyword of indestructible