Cards I would cut:

• Forbid - Expensive to cast with buyback; doesn't seem advantageous.
• Boomerang - I personally don't find cards like this to be terribly useful, but that's more a matter of choice than fact.
• Hurkyl's Recall - Doesn't seem as powerful as it could be.
• Avatar of Woe - With your counterspells, this card seems less impressive. The chances of you casting it for its reduced cost are also kind of low.
• Desolation Angel - Do you have a plan for this one? It doesn't seem the least bit advantageous for you to destroy lands.
• Dread - This card is a slow and ineffective answer to combat-based threats.
• Royal Assassin - Slow and inefficient.
• Vampire Nighthawk - Irrelevant in competitive EDH.
• Vesuvan Shapeshifter - Expensive and slow.
• Sorin Markov - Doesn't seem necessary.
• Venser, the Sojourner - Doesn't seem necessary.
• Confiscate - Slow and expensive.
• Take Possession - Expensive.
• Plague Wind - Expensive.
• Reshape - Expensive and unnecessary.
• Rite of Replication - Expensive and unnecessary.
• Esper Panorama - Unnecessary.
• Rogue's Passage - Unnecessary.
• Vesuva - Unnecessary.

Do you want to win through combos or some other means? There are better Esper combo generals, but you can make Sen Triplets work. My suggestions will be based on the direction in which you want to take this deck.

I just got rid of Royal Assassin and Vampire Nighthawk , replaced them with Memnarch (for added permanent stealing) and Rune-Scarred Demon (to tutor over and over with Deadeye).

Combos are really the only thing I could think of as wincons, aside from stealing their big beaters and beating them with it. I'm open to other ideas.

What really attracted me to Sen Triplets was not only the ability to shut down a player's casting during my turn, but the option to play their spells if they are playing one of my colors. That, in addition to it not being one of the more commonly played generals (that I've seen).

I'm open to whatever you may want to suggest to replace the cards you mentioned, Epochalyptik. Like I mentioned in my forum post, I'm really stumped when it comes to many of the non-blue spells to add. I did go ahead and replace Esper Panorama , Rogue's Passage , and Vesuva with Isolated Chapel , Glacial Fortress , and Drowned Catacomb .

Worth noting, I feel, that after I finish buying my Kresh deck, this will be my next purchase as I feel it would really stick it to my meta.

Also worth noting Venser, the Sojourner is one I'd like to keep in. Not only is he one of the few cards mentioned I currently own (I have 6 of these guys for some reason), but I really like his +2 (I feel it synergizes well with cards like Rune-Scarred Demon , Archaeomancer , etc) and I like his ultimate.

The problem is that Venser, the Sojourner isn't really geared toward the kind of deck you're looking to make. You'll need to decide whether you want to go for the optimal build or sacrifice some power for other cards.

I personally like Sharuum the Hegemon as a go-to Esper combo general. However, you should choose the general you feel best represents your preferences and goals.

A popular Esper combo is Thopter Foundry + Sword of the Meek . This goes infinite with Phyrexian Altar (infinite life) and Ashnod's Altar (infinite life and infinite mana). You can add Disciple of the Vault , Blood Artist , etc. to turn the combo lethal.

You might consider looking up some of the Esper combo decks on MTGS. The EDH forum there also has some good resources for infinite combo players.

Consider some of the following:
Vampiric Tutor
Enlightened Tutor
Tezzeret the Seeker
Mana Vault
Basalt Monolith
Grim Monolith
Wrath of God
Damnation
Teferi, Mage of Zhalfir

Removing: Forbid , Boomerang , Hurkyl's Recall , Avatar of Woe , Desolation Angel , Dread , Vesuvan Shapeshifter , Sorin Markov , Reshape

Adding: Vampiric Tutor , Enlightened Tutor , Tezzeret the Seeker , Mana Vault , Basalt Monolith , Grim Monolith , Wrath of God , Damnation , Teferi, Mage of Zhalfir

That Thopter Foundry combo is legit, but I don't see the cards involved doing much on their own without the other combo pieces. I suppose tutoring the pieces wouldn't be difficult. I'm a bit confused on how it works tho, would I be saccing Sword of the Meek to feed the Foundry?

Yes, you sacrifice Sword of the Meek to activate Thopter Foundry 's ability. When the token enters the battlefield, Sword of the Meek 's ability triggers and causes Sword of the Meek to return to the battlefield. You can then sacrifice the sword again.

If you have either Phyrexian Altar or Ashnod's Altar , you can sacrifice the token to produce mana to keep the combo going.

Makes a lot of sense, and provides an alternate wincon. Thanks again, Epochalyptik. These changes aside, deck still runs much slower than I'd like. :( Also, the mana doesn't seem to flow well together (Playtesting 9 times out of 10 I get stuck with white mana when I need black, or blue when I need white).

Just playtested it 4-5 times... fastest win I could get was turn 11. I'm assuming it's just luck of the draw. I didn't even get to use Sen Triplets in any of the playtests, lol.

Honestly, tricolor decks are naturally finicky. I use 3 ABUR duals, 3 shocks, and 9 fetch lands to get my BUG deck, Dominus - Dreamcrusher Edition, to function smoothly. You also don't have access to green's ramp power, so you'll need to rely on artifacts. That means cards like Mana Crypt are going to be important.

Yeah, I hear ya. I'm iffy on leaving Land Tax in here. It depends on them having more lands than me, and the 5 different EDH decks I tested against didn't meet that condition, as I was successful in popping lands out each turn (except they weren't colors I needed). But then again, grabbing 3 basics if they do happen to have more lands than me is great.