While there are certainly quicker ways to build up tokens over time, the idea of pumping up Earl with Ethereal Armor or artifact equipment and littering the field with squirrels will be a powerful strategy
Pokmon cards value is determined by three core factors: rarity (how limited the print run is), condition (physical state from Mint to Damaged), and demand (collector and competitive player interest)
Thoughtseize (and Inquisition of Kozilek) Something that I see in a lot of Cubes is players including discard spells that are specific to their environment and eschewing the more generic Thoughtseize
the honorable mentions, I guess you could say
For example, everyone who has hung out near Preston Garvey knows how important those settlements are to the Minutemen, so we designed his card to enchant your lands with Settlement Aura tokens
I based that original assessment on the fact that I bought a box of Family Size Cinnamon Toast Crunch and a box of Large Size Trix, not realizing that it was the size, not the brand, which determined that exclusivity