Kalain makes it so whenever you cast a creature using Treasure tokens, they enter with +1/+1 Counters equal to the number of treasures used for it
Against conventional removal this is one of the best threats going
Sacrificing Treasure from Pitiless Plunderer, getting additional card draw from Obsessive Pursuit, and The Ozolith for insurance are all great cards to use here
Sword-Point Diplomacy and Animal Magnetism leave you at the mercy of both your opponent and the top of the deck, while Manifold Insights looks at enough cards that youll probably find something good (but want to have enough opponents that you can get it)
[Update 23 Jul 2025] This cards price continues to be extremely volatile as of late
The only exception, perhaps, is if your deck is colourless and just wants a load of utility lands with special abilities