This looks like a pretty sweet Abundance deck, it does a lot for card selection. Also, this looks like a good Bident of Thassa deck, since you have huge blockers, a lot of creatures, and want to draw cards.

Hmm....what should I remove for Bident of Thassa ?

OMG why is your commander Zeniga and not Momir Vig, Simic Visionary ? Your strategy is way more Momir than Zeniga

I fail to see how my Zegana deck is more Momir than Zegana. It's a combo deck that uses ramp and control to combo out for many different ways.

Zegana is an amazing card draw engine and mix in the ability to abuse her ETB triggers things get ugly fast. She is everything this deck needs when it needs it.

Explosive Vegetation , Thassa, God of the Sea , Lightning Greaves , Mimic Vat , Search for Tomorrow , Garruk, Caller of Beasts , Simic Guildgate ]

Thassa was originally in here. Removed for other things but looking for a place for her. Everything else is unnecessary.

I think that Chasm Skulker could be an always-better Lorescale Coatl , if you can pick one up

I like Peregrination better than Kodama's Reach since you can scry

Sakashima the Impostor can do a lot of silly things in this deck and I believe is worth considering. I also thing you should have a Laboratory Maniac as an alternate win condition and for safety, as I am all too familiar with how easy it is to draw yourself out with your commander.

If you ever find the room and money, you should also consider Azusa, Lost but Seeking since she does so much work with the amount of lands you are going to be drawing. And if you do, creatures with Landfall, a la Avenger of Zendikar or even Rampaging Baloths would look a lot more appealing. And incorporating Boseiju, Who Shelters All will make sure your Time Walk/Counterspell effects go off without needing the approval of other Blue players.

Oh yeah, and you definitely need to find room for Riptide Laboratory, Reliquary Tower, and Command Tower in your mana base. And with the sheer amount of draw power this deck is packing, you may even want a Spellbook.

@Teal_Fox: Laboratory Maniac was originally in here, but when 95% of the times I drew him he was dead, I replaced him with something that would actually help when I needed it. I never draw myself out, and can recover from massive drawing easily. Extra land per turn cards aren't needed, as 90% of my ramp comes from ramp spells. I even considered taking out Exploration for a bit. It's also why I went down to 32 lands because most games I was just drawing nothing but land when I needed something else.

If I was going a more token/combo route I'd add AoZ and Rampaging Baloths but I'm not. It'd be a different build focused more on token spam with things like Craterhoof. Boseiju is a card I should add in to help fight counterspell wars.

Riptide Laboratory only works with my general, and doesn't provide a way to add colored mana. While I'm not worried about color screw so much, it doesn't synergize with the deck enough to want it. I also don't want "no max handsize" effects cause I want to discard down to seven so Kozilek can hit the grave when needed.

+1 for the Slipknot references AND the commander (an old favorite of mine)

some more nonbasics would be good, Rogue's Passage is particularly worth looking at with zegana, then I like cycle lands in zegana, because you will draw extra lands and they let you dump them when you don't need them, and then some more multi-color lands to clear things up, guildgates, the khans uncommon land, a fetchland or two to tutor breeding pool (doesn't need to be misty rainforest, you could run like one of the khans green or blue ones).

My mana base is fine. I have little to no problems generating my mana or the colors. Taking away the basics hinders the ramp since 95% of my ramp requires basic lands. I have found it is faster this way than loading up on nonbasics. Opal Palace was including for utilizing Zegana's triggered ability.