Well, the best atog I know of is the Pyschatog. This deck is not solely based on it's abilities, but once we get the control combo going, pyschatog will allow you to punish your opponents.

Here is the deck list:

Lands: 22 Total

10 Islands

8 Swamps

4 Tainted Isles

Creatures: 19 total

3 Psychatogs

4 Putrid Imp

4 Aquamoeba

2 Boneshard Slasher

4 Organ Grinders

2 Cephalid Broker

Spells: 15 Total

4 Counterspells

4 Careful Study

3 Gastly Demise

2 Dark Suspicions

2 Breakthrough

Artifacts: 4 total

2 Ensaring Bridge

2 Angel's Trumpet

Ok, Basically, the premise of this deck is to keep drawing and discarding until you get the combo that will lock down your opponents.

The main combo you should be striving for is:

Ensaring Bridge + Angel's Trumpet + Dark Suspiscions

This combo will allow you to keep your opponents from attacking, taking damage from monsters who dont attack, and give them damage because you will probably have no hand on their turn, giving them at least a couple points of damage during their upkeep.

By using the Psychatog, Aquamoeba, or Imp ability, you can reduce the size of your hand to 1. This will most likely have your opponent's locked down. Only creatures with the power of 1 may attack. On your turn, you can keep one card in your hand, which will allow most of your creatures to attack. If you happen to get into threshold, which will probably happen, you can keep 2 cards in you hand before your attack phase to be able to use your boneshard slasher.

This is the trick:

You attack with all your creatures, or enough so that you don't take significant damage from Angel's trumpet. After blockers are assigned, you can use your creatures abilities; most importantly Psychatog's to get rid of your hand. This works especially well with Psychatog because it pumps it up, and if need be, your graveyard can be used to ensure it's survival.

Organ Grinders are there to provide some extra punch with the loaded graveyard of yours.

Counterspells are self-explanatory, and Ghastly demise can be used to stall your opponents.

Breakthrough can be used to get rid of a large hand to accomodate your main combo, and Cephalid brokers can be used to help gather your cards quickly.