Since you want your opponents to create Treasures anyway, there are a series of cards that can both give opponents Treasures and punish them for using them
Card Name Mana Cost Type Legendary Creature Mutant Warrior Rarity Rare rules Text TrampleAgent Frank Horrigan has indestructible as long as it attacked this turn.Whenever Agent Frank Horrigan enters or attacks, proliferate twice
Prioritize drawing five or more cards per turn with spells like Teferi's Ageless Insight and Arcanis the Omnipotent to pump your Drake token army
White needs to decide what makes it White, and if its based on the strengths of the better cards printed this year, then Wizards might need to reassess their reservations about the color pie
For that reason, we also consider removing certain cards from the Banned/Restricted List when the game environment changes, and when we believe players and fans will once again be able to fully enjoy the game without those restrictions
Thats up to six counters, so not bad for the cost, especially with any counter synergies already going on