eap5000

This is so close to amazing. Well done. I would however, pick a better forest than a basic forest. Probably BG Dual. I also think there probably is a better option than abundant growth unless Im missing something. If nothing else, would utopia sprawl be more effective?

I like mana leak more because it's usually a counter and it's sooooo cheap. Also, you don't need so many spell snares

I like the augor. I still dont like dissolve though. Do you own any cryptics? They are such a 2for1

And flooded strands for your lands

Well lets start with the easy one:
Friends don't play Grand Arbiter against their friends. XP
You have 5 finishers and 2 colonades so thats pretty solid.
What you need most is more 2cmc stuff. I recommend:
-4 stasis snare
-3 jace's ingenuity
-2 dissolve
+2 mana leak
+4 rune snag
+1 sphinx's revelation
+2 anticipate

Also, 4 snapcasters would be awesome but expensive.

Is the goal to make this modern competative? If so, what are you must keep cards?

There's a land from inistraad that makes spirit tokens out of creatures in your graveyard. GO find it.

Id probably also get rid of Timely reinforcements. Would be better as Stony Silence.

Damnation doesn't look like mainboard material to me. Finks probably doesn't belong here either. SInce your beaters are big. Maybe Pyroclasm is a better wipe?

Nice list. I'd make a small suggeston for both the main and side boards. I think 1 spike feed and 1 Archangel is too small to ever be a reliable win con even with chords. Another spike feeder might help so you'll hit it more often off a coco. As the the SB cut crumble and reveilark and Ana fenza in favor of more the against the meta. Kataki firewall and fulminator probably

Have you considered a desolate lighthouse or two in case you draw Emrakul?

More pump might help. As might manamophose

Add the new Ezuri. It'll be bonkers here.

Sadly Rain of Gore is worded in such a way that this doesn't work. I wish it did though. Note where it says "its controller" =(

Still testing the pit dragon

Pack rat and the wurms go a good way. The 8 bolts help more. It's too bad madness didn't get any good cards and he'll bent was worse.

Grave pact is hard to play. Maybe cut it for a sac outlet like Phyrexian arena or viscera seer

Shred Memory?

I think you ought to max at those manamorphose though

I don't think blue really helps you here.