Yeah, any damage triggers Toralf. Damage based boardwipes will win you the game. Maybe drop Razorfin Hunter? Inferno Titan? I just remembered another card you might like. Quicksilver Dagger

Thada Adel, Acquisitor is excellent ramp if you can get one. Playing every Sol Ring except your own is fun.

Shrieking Drake would combo with Kefnet's Monument (or any of your ETB's i guess). Tapping down as many creatures as you have blue mana could win a game.

Octopus Umbra fits the theme. Vedalken Shackles fits the theme but its $8.

I use Soaring Seacliff a lot. I'd keep it for that one big flying Sea Serpent.

I haven't made a deck with this commander yet but I want to. It's a little too close to my pinger deck for me to really get motivated for it though (Yeah, sure. Keranos will work). I should probably try to simply swap commanders. You can tell by the name I already had a deck and just wanted a commander with any synergy at all.

Cards I thought might be cool here include Toralf, God of Fury  ^Flip, Neko-Te, Wojek Embermage, Cosmotronic Wave.

Deathtouch kills with 1 point so Toralf will kill 3 creatures with a 1 point ping. You get to move lots of damage around if the enemy had an army of 1/1's and you do a point to all of them. Wojek Embermage can kill an army if your boss in off board with a deathtouch artifact or even more if your boss is active. Neko-Te takes out creatures with Indestructible.

Wojek Embermage, Cosmotronic Wave

If you have a lot of pingers you can have fun with Neko-Te and Cowardice. Quicksilver Dagger maybe

Rite of Consumption, Tend the Pests, Jarad, Golgari Lich Lord, Feed the Pack

Tend the Pests especially because its an instant that can react to an opponents removal.

If you need to bring the price down you have a couple $5 lands that could be replaced easily. Basics or even cheap guildgates work in a two color deck.

Fractal Harness to add counters.

Wilson, Refined Grizzly?

Omnath, Locus of Mana dropped to a reasonable price again. Vigor as well.

Guardian Augmenter and Aspect of Mongoose to protect important guys.

Feywild Visitor could double up your token creation and give you more to sac for Dargo.

Sigil of Sleep is awesome on a "1 damage to each opponent" creature.

Cosmotronic Wave, Wojek Embermage, Dismiss into Dream

If you are causing damage out of combat Meishin, the Mind Cage won't hurt you and puts a lot of decks out of business.

You have a lot of things that create Thopters, maybe you don't need the Ornithopter? I didn't look very hard to see if you had one of the old infinite ornithopter combos but I figured you wouldn't because its a budget deck.

Silent Arbiter to make your artifact creatures unblockable?

Bladegriff Prototype and Steel Hellkite for removal. The Metalwork Colossus should come out cheap in this deck.

oh right. Its not cost its rarity. my bad sir.

Cloakwood Hermit works from cards that are discarded as well as killed. Any of the red draw/discard cards would help your card draw problem and you get your squirrels.

Krenko, Tin Street Kingpin is a pretty cheap token generator to back up your squirrels.