most MC has this always equipped, I wanted to make a side skill and not a main abillity
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by using density the user can dense and de-dense anything he touches
the more dense something is the heavier it is
every change in density costs energy/stamina, the more extreme the change the higher the cost
this skill can be used with other skills and even works on energy
examples:
the user can dense the air under his feet to walk on it
the user can make his body denser so it gives more protection
the user can de-densify himself to make himself move faster (less weight )
while attacking the user can make himself dense so that attacks have more weight