Mana Freeze

Remove all mana from target player's mana
pool, for each colored mana removed this
way, that player creates an token artifact
named Ice with: "Sacrifice this artifact: Add {c}.".
———{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}{line}
The best way to stop a spell is to never give
them the opportunity to use it.