Your search for "Mundungu" revealed the following:
Human // Murf Token (Foil) (TTRK) from Star Trek, available at 401 Games Canada. Rarity: Token Finish: Foil Artist: David Álvarez & Leesha Hannigan Card Text:Human: Permanents can't phase in.Murf: Indestructible
Inkay - 068/103 - Common - Reverse Holo from Mega Evolution: Delta Reign, available at 401 Games Canada. Rarity: Common Finish: Reverse Holo Artist: kawayoo Card Text:[D] Knock Off (10)Discard a random card from your opponent's hand.
Mundungu (VIS) from Visions, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Terese Nielsen Card Text:T: Counter target spell unless that spell’s caster pays an additional 1 and 1 life. Play this ability as an interrupt.