RD/HC01-JP035 黒魔導の遂行者 Black Executor (Dark Executor Warlock)
Level 7 DARK Spellcaster Effect Monster
ATK 2500
DEF 2100
[REQUIREMENT] Send the top card of your Deck to the GY.
[EFFECT] This card’s name becomes “Dark Magician” during this turn, then, you can shuffle 10 Spell Cards from your GY back into your Deck. If you return them, then, you can choose 1 face-up Level 8 or lower monster your opponent controls and destroy it.

Note: The name IS extremely close to Dark Eradicator Warlock’s Japanese Name, so I’ve decided to go with something similar.