How can i improve my YUGI'S starter deck?10pts?

i would take out kuriboh and add new cards from yugioh gx its one of the best ways to make your deck stronger. you can also buy a dragon deck at target. the rarest card is felgrand dragon because of its effect, if you special summon felgrand dragon from the graveyard you can choose a monster and multiply its stars by 200 and add it to your attack power this can only work if felgrand was defeated in battle ( atk: 2800 def: 2800. that deck has other good cards that can make monsters be summoned easier