I could also have a few word on your elemental descriptions, but I won't right now 
I would prefer if you did at some point. I'd like to correct the guide to the best that it can be corrected.
I also find
more of an enduring element: capable of handling whatever the opponent put in his deck.
is more of a controlling element, mainly through cc.
Many paragraphs make this wall of text an easy read.
Nice job.
Thanks. I find

to be more controlling than

though.

has creature control, permanent control, and quanta denial while water only has creature control. Sure,

as trident but you need

to power that ironically. Utilizing the control and denial in

, one can almost completely shut down the strategy of his opponent with the right deck, while utilizing the CC in

can only slow down the creatures of the opponent. Since the creatures in a deck aren't everything,

is more controlling than

.
I find

to be more enduring however.

has to rely on shutting down the strategy of the opponent's deck or finding a way to bypass that strategy to truly work while water seems to endure an extreme amount of damage by freezing the creatures the enemy put on the field.