They basically have to have the perfect bench of two Ralts, one Kirlia, one Gardy ex, a Drifloon, and a Scream Tail, so nothing can get Mawile locked

Sort Card Type Excadrill #96Rare $0.35 Excadrill #119Rare $0.28 Excadrill #115Holo Rare $0.64 Excadrill #122Uncommon $0.07 Excadrill #183Uncommon $0.04 Excadrill #147Uncommon $0.12 Excadrill #109Common $0.08 Excadrill #29Common $0.05 Excadrill #67Common Excadrill #77Common $0.25 Excadrill #50Uncommon $0.71 Excadrill - 031/049 #31Rare $0.42 Excadrill - 040/071 #40Uncommon $0.06 Excadrill - 048/070 #48Uncommon Excadrill - 049/070 #49Rare $1.00 Excadrill - 059/049 #59Character Rare $3.65 Excadrill - 079/071 #79Art Rare $2.88 Excadrill - 086/162 #86Uncommon $0.08 Excadrill - 174/162 #174Illustration Rare $11.90 Excadrill - 56/98 (Cosmos Holo) #56Promo $7.08 Excadrill (56) #56Holo Rare $1.69 Excadrill (56) #56Rare $0.68 Excadrill (57) #57Rare $0.77 Excadrill (57) #57Rare $0.84 Excadrill (Omega) #97Holo Rare $2.97 Excadrill (Secret) #246Secret Rare $5.89 Excadrill EX #82Ultra Rare $4.10 Excadrill ex #46Double Rare $0.57 Excadrill ex - 049/086 #49Double Rare $0.21 Excadrill ex - 160/086 #160Ultra Rare $0.79 Excadrill ex - 163/086 #163Super Rare $0.70 Excadrill ex - 168/086 #168Special Illustration Rare $24.38 Excadrill ex - 171/086 #171Special Art Rare $12.30 Mega Excadrill ex - 063/081 #63Double Rare $0.35 Mega Excadrill ex - 065/084 #65Double Rare $2.23 Mega Excadrill ex - 101/081 #101Super Rare $5.23 Mega Excadrill ex - 103/084 #103Ultra Rare $9.28 Excadrill ex - 168/086 #168Special Illustration Rare $24.38 Excadrill ex - 171/086 #171Special Art Rare $12.30 Excadrill - 174/162 #174Illustration Rare $11.90 Mega Excadrill ex - 103/084 #103Ultra Rare $9.28 Excadrill - 56/98 (Cosmos Holo) #56Promo $7.08 Excadrill (Secret) #246Secret Rare $5.89 Mega Excadrill ex - 101/081 #101Super Rare $5.23 Excadrill EX #82Ultra Rare $4.10 Excadrill - 059/049 #59Character Rare $3.65 Excadrill (Omega) #97Holo Rare $2.97

To make today's list easier to understand, there are 4 main types of card you should be able to discern from the set: The Character cards : those have brown borders, some are foiled and some arent The Reversal or Special cards : defined by their blue borders, most of the time with holo foil The Hyper cards : recognizable with their red blood border, with and without holo foil and one card only was ever produced with a Prism effect
More recently, he contributed the nine-card connecting set of Illustration Rares to Crown Zenith
I heard different WOTC employees imply that this is actually a Green effect all along and Urborg, Tomb of Yawgmoth was a color break which I strongly disagree with (tainting land is Black / Blue thing), and another WOTC employee say that yeah, it's originally Black's thing but we want to complete the cycle and we're just starting with Green is all