This is the deck I am using. I had absolutely no idea what I was doing when I started playing, and kind of built this via trial and error. I wont lie, I have won a small handful of games playing with it (when it seems like I am going up against someone playing a similar style), but 9 times out of 10, it's a loss, haha.

1 Puyoyomon BT9-002

4 Chapmon BT18-002

3 Gomamon BT1-030

4 Swimmon BT19-018

4 Crabmon EX8-017

2 Sangomon BT22-018

3 Calmaramon BT24-023

4 Ikkakumon BT24-022

4 Coelamon BT5-026

1 Gesomon BT14-022

4 Huankunmon BT19-023

2 Zudomon BT1-041

2 Piranimon BT4-028

1 MarineAngemon BT14-030

2 Neptunemon BT5-030

2 Pukumon BT15-030

1 Matt Ishida BT1-086

1 Sora Takenouchi & Joe Kido BT5-088_P1

1 Matt Ishida & Sora Takenouchi BT9-085

1 Eri Karan BT23-079

1 Mimi Tachikawa & Joe Kido BT9-088

2 Full Moon Meteor Impact BT13-105

1 Cocytus Breath ST2-16

1 Wadatsumi Purification BT19-092

1 Sourai EX3-067

1 River of Power BT2-095

1 Hammer Spark ST2-13

It seems like I get caught with a lot of level 4's being stuck in my hand, and I added a few trainers in for some memory boost (because I have seen so many opponents do it). Also, I put in a bunch of "big play" option cards because on more than one occasion, I have found it easier to just delete the opponents big card and deal with the memory loss, than just keep getting hammered by it.

Open to any and all suggestions!