Pest Control
Sorcery
Destroy all nonland permanents with mana value 1 or less.
Cycling 
"How dare these varmints befoul the shining streets of Prosperity?" —Baron Bertram Graywater
Jonas De Ro
The Big Score (BIG)
• #22Rulings
The mana value of a token that isn’t a copy of another object is 0. A token that is a copy of another object has the same mana cost as that object.
(wotc • 2024-04-12)
If the mana cost of a permanent includes {X}, X is 0 for the purpose of determining its mana value.
(wotc • 2024-04-12)
Rulings
The mana value of a token that isn’t a copy of another object is 0. A token that is a copy of another object has the same mana cost as that object.
(wotc • 2024-04-12)
If the mana cost of a permanent includes {X}, X is 0 for the purpose of determining its mana value.
(wotc • 2024-04-12)