In addition to Thousand-Eyes Restrict , it is likely that he was also running other Fusion Monsters such as Dark Balter the Terrible , Ryu Senshi , etc
The effect is the removal of his Special Summoned monsters in the main monster zone with a hand cost, which is somewhat difficult to use compared to Phoenix, which unconditionally allows him to remove Spell/Trap
We also have a full list of R&D Playtest card names and the artists if you're curious about the unique visual illustrations these cards feature
He's a Warrior Therapist, except when his opponent has different values and goals than he does, thus the number of times he's been an effective Warrior Therapist can be counted on one hand
Times have changed: Before, allowing a Chaos Emperor Dragon to explode pretty much spelled doom unless you had a Witch of the Black Forest/Sangan on the field during the wipe
With Half-Shark, you can just keep returning action cards to your hand through challenging, opening yourself up to all sorts of combos and more importantly easy access to targeted removal when you need it