I play ANT this weekend at the gp. The deck seems really nuts and think that it can compete even vs counterbalance deck but i/we need to tweek it.

This is the list i played

4 polluted delta
3 flooded strand
2 underground sea
1 tundra
1 scrubland
1 tropical island
1 swamp
1 island

4 brainstorm
4 dark ritual
3 cabal ritual
3 mystical tutor
3 orim's chant
2 ad nauseum
1 krosan grip
1 echoing truth
3 ponder
4 infernal tutor
4 duress
1 ill gotten gains
1 tendrils of agony
3 chrome mox
4 lotus petal
4 lion's eye diamond
1 thoughtsieze

sb
4 dark confidant
3 tendrils of agony
1 krosan grip
1 hurkyls recall
1 rebuild
1 ill gotten gains
2 slaughter pact
1 echoing truth
1 thoughtseize

I went 6-3 playing vs. 1 merfolk, 6 countertop decks (3-3), ichord, and enchantress. I only cast orims chant vs the ichorid deck as time walks and duress/thoughtsieze was the nuts every game and think that i want the full sweet and just cut the white all together.

Also ant deck that made the top 8 he is a very solid player and the deck is very powerful and with the right player behind it can put up great results. It doesn't fit my play style and i dont like playing red due to the fact that i dont like when blue elemental blast is really good against you, but it is definitly somthing to consider.