His strategy is aristocrats, where you win by sacrificing your own creatures
Even without an overwhelming amount of sales data, this card is fairly easy to find across conditions, as you can pick up MP copies for close to ten dollars, while LP will be a little more, around $12 or $13, with NM versions jumping up into the $18 range, which isn't too much more for a clean copy
One can Special Summon any Fairy Tail monster from your Deck or banishment, and the other can negate any card or effect
Recent sets have introduced build-arounds like Insidious Roots, Kishla Skimmer, and Quintorius, History Chaser, inching this strategy ever closer to critical mass
Always practice on base cards or cheaper holos before moving on to the high end stuff
Aang, Swift Savior / Aang and La, Oceans Fury Making Spell Queller a human and letting it target anything is nice, though airbending is only a temporary solution