The Dreadnought is definitely a random win I love. ^^
Overally the deck seems solid to me. The only suggestion I really have is that Wake Thrasher. Honestly, imo he's a sub-par creature not deserving of deck space. Sure, he's great on the attack, but in the absense of multiple Lords he becomes a chump blocker at best. He also lacks trample or evasion, so he isn't exactly difficult for an opponent to deal with. And even with your 7 cantrips, as a 1-of it's very doubtful you'll draw him, nor can I think of any instance where you would wish you had him on hand.
My only suggestion is:
-1 Wake Thrasher
+1 Standstill
Something I've been looking at building is a Ur variant of Merfolk. Before I continue, let me just say that I had obtained some Volcanics for Sneaky Show, but have since then dismantled said deck. I already have a Mono-U build of Merfolk (or I did before I took it a apart) so I'm looking at a Red splash for Merfolk. It's just for fun to see how it works, I fully expect it to be the worst splash of the other four colors available.
4
Scalding Tarns2
Misty Rainforest4
Volcanic Island4
Wasteland4
Mutavaults3
Island4
Force of Will4
Daze4
Standstill3
Spell Snare4
Aether Vial4
Lord of Atlantis4
Merrow Reejery4
Coralhelm Commander4
Silvergill Adept4
Taurean Mauler
I always have problems finding cards to subtract from decks such as Merfolk because so many cards are necessarily to the overall power of the deck. I also had a great deal of fun trying to find ANY Ur Merfolk deck on the various search engines (I found none ><').
I opted for Snare over Pierce aas my current meta is more aggro-oriented right now (Aggro Loam, VengSurvival, Merfolk, with random Storm/Land/Enchantress) so I felt the Snare would overall be more useful to my meta.
You'll also note that I switched out Cursecatcher for Mauler. I'm reluctant to remove a 1-drop from the deck, however I wanted to see how Mauler faired. A 3-drop (which ultimately could slow me down in comparison to other aggro) however he benefits from the Lords and gets bigger on his own which is beneficial against decks like Loam/Land/Enchantress who rely on casting multiple spells a turn.
As it stands the R Splash will be more prominant in my SB. I'm considering Moon effects and perhaps Artifact hate/REB. Anyway, let me know your thoughts of suggestions.
Again, I'm building this for the fun of it. I fully acknowledge there is a 99.9% chance it is/will be weaker than the other color splashes.
Forlorn Egoist