For me, I looked mainly on what the elements seemed to represent, rather than their playstyles.
#1:
To me, destruction is the only true reality to existence. As such, I see death, representing destruction, as all-encompassing and inevitable. Yet, I don't think it's malicious - destruction is no more than one form of creation.
#2:
Although I'm not fully comfortable with its current thematic, I like the element's representation of the unknown - it's infinite and omnipresent.
#3:
Not very many reasons, but I like how several of its cards have linkage to actual physics like the hypothetical Maxwell's demon and butterfly effect situation.