Mizzix's Mastery [Mystery Booster] Skeleton Wizard Mogglings have been known to

Mogglings have been known to play ball with hibernating slivers

You choose a nonland card from it with mana value 3 or less

destroy up to one target legendary permanent

if that player lost less than 8 life this turn

Set: Unknown Event Type: Artifact Creature — Spirit Rarity: Common Cost: {6} Trample

Mizzix's Mastery [Mystery Booster] Skeleton Wizard Mogglings have been known toSet: Mystery Booster Type: Sorcery Rarity: Rare Cost: {3}{R} Exile target card that's an instant or sorcery from your graveyard. For each card exiled this way, copy it, and you may cast the copy without paying its mana cost. Exile Mizzix's Mastery. Overload {5}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")