Hex Reverse Elements — Fire, Water, Wind, Earth and Monsters

Hex Reverse elements are Fire, Water, Wind and Earth, and they are documented as a property a card can carry rather than as a separate character class. The store description says SP skills can change a card's element, and the achievement list backs that up with a goal for each of the four elements and a broader goal for obtaining every monster. What the store page never publishes is an interaction table, so this page lists what exists and flags the mechanics that are still unknown.

The Four Elements

The four names come from the achievement goals, and the store description supplies the only mechanic attached to them so far: they can be changed.

Element	Documented role
Fire	One of the four elements, with its own element-master achievement goal
Water	One of the four elements, with its own element-master achievement goal
Wind	One of the four elements, with its own element-master achievement goal
Earth	One of the four elements, with its own element-master achievement goal

The table is deliberately thin, because that is all the official material supports. Whether a card's element affects its six edge values, which skills move a card from one element to another, and whether elements matter at all in a plain battle are all undocumented.

Changing a Card's Element with SP

SP is the resource you spend to activate skills, and changing a card's element is one of the listed effects. The same sentence in the store description adds that skills can strengthen cards, weaken opponents, draw additional cards and alter the flow of battle, so element changes share a budget with every other skill you might want to fire. That makes an element change a decision with an opportunity cost rather than a free toggle.

Because the specific skill list is not published, the practical route is to read the in-game skill text and decide when a change is worth the SP. The gameplay page covers the wider SP system, and the cards page explains the six values an element sits on top of.

Collecting Every Monster

The achievement goal for obtaining every monster is the only official clue that a monster set exists at all. It does not say whether monsters are cards, allies or something else, how many there are, or how you acquire one, so the whole collection layer is not documented yet. What can be said is that it is finite, because a goal of obtaining every monster only works if the set has an end, and that it is tracked separately from the four element goals.