pack ur deck wit monster that have atck rate of 1800 and 1900.(gemini elf,vorse raider,gil garth)also add toon gemini elf to let him discard his hand,use tribute monster like summon skull or cybertech aligator.a black luster soldier-envoy of the beginng will help remove his deadly effect monster frm play.spell like heavy storm and mystical typhn is also needed to wipe his traps.trap like mirror force,trap hole,ring of destruct is useful too.when his wingdragon apear set cyberjar to defeat it.penguin soldier and guardian sphinx is very helpful to atck his life points directly.put lightning vortex,united we stand and mage power.with these cards i defeat yami marik iin less than 10 turns.actually it's by luck cause he summons less monsters due to toon gemini elf.