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, Three Tree City turns a board built around one creature type into a larger mana source. Choose that type as the land enters. Its ordinary ability produces colorless, while paying two mana and tapping it produces mana of one chosen color equal to the number of matching creatures you control. Tokens count when they have the chosen type.
Elf decks led by Lathril, Blade of the Elves can build the count with both creatures and Elf tokens. The activation’s two-mana payment matters: producing three mana is only one more than you spent. Unlike Gaea’s Cradle, the ability counts the chosen type and asks for an upfront payment, so it rewards a genuinely developed matching board.
Plan the turn around both the amount of mana available and the colors each spell requires. A hand containing Sol Ring can have plenty of total mana while still struggling with colored symbols. Keep reliable lands alongside specialized sources, and sequence the source that establishes a missing color before committing resources to a payoff that depends on it.
Creature-type density is the deciding factor. A collection of individually strong creatures with unrelated types may leave the larger activation unproductive. Token makers that match the chosen type improve both combat presence and mana output, while a sweeper can sharply reduce the land’s contribution on the following turn.
