Unfortunately its difficult to build around and not particularly interesting or powerful once you tick all of these boxes
With the trigger to deal four damage on both entering the battlefield and attacking, giving Boilerbilges haste with cheap effects from cards like Lightning Greaves can let you deal up to 13 damage
We now have synchro monsters, XYZ monsters, pendulum monsters and link monsters that can all utilize the extra deck and all of a sudden, having a good extra deck makes the difference between winning and losing
The deck also features quick, efficient burn and removal spells such as Lightning Strike and Skewer the Critics
Second of all, which deck(s) would be the best choice(s) to take to a real tournament
Many collectors are drawn to Kuroimori cards due to their potential value and unique designs, making them a valuable addition to any card game collection