Saryuja Skull Dread This is a versatile card, but doesnt do a whole lot of favors for the deck
If nothing else, it's nice to see Xous made it to honorable mentions
Mewtwo Collection Battle Arena Decks: Mewtwo EX vs Darkrai EX Elite Trainer Box [Mewtwo X] Elite Trainer Box [Mewtwo Y] $990.00 BREAKthrough Pin Blisters [Mega Mewtwo] (Set of 2) BREAKthrough Three Pack Pin Blisters [Mega Mewtwo X] BREAKthrough Three Pack Pin Blisters [Mega Mewtwo Y] Mega Mewtwo Collection (Set of 2) Leavanny #12Holo Rare $1.38 Piplup #33Common $2.86 Gyarados #31Rare $1.52 Victini #23Holo Rare $6.93 Xatu #56Rare $0.39 Crustle #14Uncommon $0.67 Servine #7Uncommon $1.08 Kirlia #60Uncommon $0.64 Emboar #27Holo Rare $22.91 Keldeo EX #45Ultra Rare $4.49 Armored Mewtwo - SM228 #SM228Promo $283.86 Cresselia - 87/236 (Mewtwo Stamped) #87Promo $0.22 Cynthia - 119/156 (Mewtwo Stamped) #119Promo $0.33 Eevee - 49/68 (Mewtwo Stamped) #49Promo $0.86 Espeon - 89/214 (Mewtwo Stamped) #89Promo $1.60 Hau - 120/149 (Mewtwo Stamped) #120Promo $0.14 M Mewtwo EX #43None $49.75 M Mewtwo ex - 028/059 #28Double Rare $80.00

Note that's per instance, not for the amount, so something that triggers often like Soul Warden is better
The most common target for stat-boosting is Cacophony Scamp , which can sacrifice itself and deal damage equal to its power to any target when it deals combat damage
This drew widespread criticism from the community, which was quick to foment, considering Wizards of the Coast's already sketchy track record with similar past incidents