Sanji has a pretty useful ability that you can enact once per turn too if you play a Character with no base effect from your hand, you can make two of your DON
Its solid, does its role well, and is a great backup option
Throughout the series, he meets his eventual rival, Seto Kaiba, who he defeats in their first battle at school and during Death-T, and meets other wielders of the Millennium Items, including Shadi and Dark Bakura
Maelstrom Wanderer (Haste Green/Blue/Red Creature) Cascade is one of the most broken abilities ever printed, and [c]Maelstrom Wanderer[/c] has it twice
White of course has lots of great oppressive cards like Drannith Magistrate, Spirit of the Labyrinth, Archon of Emeria, Aven Mindcensor, High Noon, etc