Combo Cards

LE14-JP004 Shoutendouji
Earth/Undead-Effect/4/1500/800
Once per turn,select one of the following effects and activate it:
-By removing from play 2 Undead-type Monsters in your Graveyard,draw one card.
-Return 1 of your removed from play Undead-type Monster back to the top of your deck.

PP11-JP004 Mezuki
Earth/Undead-Effect/4/1700/800
By removing from play this card in your Graveyard,Special Summon 1 Undead-Type Monster from your Graveyard.

Hence, by using these two cards, you can reuse the effect of Mezuki as long as Mezuki return back to the top of your deck by the effect of Shoutendouji. By combining these two cards in the Undead-type Deck, the percentage of winning the duel sure will increase. These two cards are one of the main card in the Undead-type Deck.