Mezzio Mugger - [Foil] New Capenna Commander (NCC) Sealed Scholars say that arbiters exist

Scholars say that arbiters exist on every world

Activate only if Luminarch Ascension has four or more quest counters on it

You may cast Spirit spells as though they had flash

Remove a +1/+1 counter from Walking Ballista: It deals 1 damage to any target

Mezzio Mugger - [Foil] New Capenna Commander (NCC) Sealed Scholars say that arbiters existWhenever Mezzio Mugger attacks, exile the top card of each player's library. You may play those cards this turn, and you may spend mana as though it were mana of any color to cast those spells. Blitz {2}{R} (If you cast this spell for its blitz cost, it gains haste and "When this creature dies, draw a card." Sacrifice it at the beginning of the next end step.)