Hello
I feel like there are too much non-creature spells. If you want an aggro deck, my suggestion would be: lower the mana curve and add more Merfolk instead of spells like
Dive Down and
Waterknot. In this deck you can easily put somewhere between 28 to 32 creatures with the current mana base. Your final goal is to
flood the board with creatures, put some counters on them, attack your opponent and bounce stuff back with
Unsummon and
River's Rebuke. This is the real potential of Merfolk in standard.
Specific notes:
- I don't agree with Jace in this deck because it is too slow.
Silvergill Adept makes more sense as a card draw that's also a creature.
-
Merfolk Branchwalker and
Jadelight Ranger are too strong to not make it in this list.
Kumena's Speaker is fine too as a one drop.
-
Sphinx of Magosi will be a
dead card in your hand most of the times. Too big, too slow.
- Unless you're on a budget list,
Kumena, Tyrant of Orazca is strong and will close out games. Also, it has sinergy with
Herald of Secret Streams.
Hope it helps.