You may sacrifice a creature with converted mana cost greater than or equal to the emerge cost
Here, Ancient Grudge played an important role in supporting the land destruction subtheme suggested by Mwonvuli Acid-Moss
Now, I'm only a casual game player, so I can't guarantee they are all 100% TCG/OCG playable, but feel free to comment :D With this Deck, I felt you would be disrupting the opponent's hand by returning cards to the Deck and directly discarding with cards such as "Tiny Alice", "March Hare" and "Caterpillar's Temper", while simultaneously dealing alternative effects with cards such as "Chasing the White Rabbit" or "Unfair Match." "The Caucas-Race" also helps in this regard by limiting your opponent's hand size, causing them to discard more, and in turn receiving the effects of the above cards more often
A card I dont think has had the chance to shine yet is Rammas Echor, Ancient Shield
The Dark Magician Girl card itself, unfortunately, isn't too good