Mulligan neptulon is really, really good. it wrecks control matchups because you get to draw four cards, and it doesn't get you any closer to fatigue. plus, almost every murloc has synergy with one another, so even when you get shitty murlocs, they usually get buffed or provide buffs.
also just went 12-1 in arena with paladin. got 430 gold and 2 packs :)
triple truesilver, double muster, and a sword of justice, and they never really got clunky. double creeper + harvest golem + double muster + double argent squire had repulsive synergy with knife juggler, defender of argus, cult master, stormwind champion, and frostwolf warlord. pretty much every game I got early board control with my one drops and my weapons and then just snowballed with my late game. dunno what all wasn't pictured, but I know my 6 was a boulderfist and my 7s were GoK and stormwind champ. also pretty sure I only drew equality like twice.
oh also I was playing around with unstable portal in constructed, and I fucking hated it. when it whiffs, it whiffs really fucking hard, and even though it has the potential to win you the game, it also has the potential to lose you the game. I replaced them with mech yetis for antonidas spare parts, and I've been much happier.
the biggest gripe I had with portal was it did nothing to advance my game plan. the whole idea of my deck is fighting off early aggression with super efficient minions and then snowballing late-game with duplicate on big shit, and unstable portal was just kind of there.