Drillworks Mole Two mana for two counters seems like a pretty good rate
For One Mana - Green Part four of the For One Mana article series, where I take a closer look at one-mana cards you could be playing instead of automatically going for the often played Birds of Paradise, Fyndhorn Elves, Natures Claim, or Wild Growth
A card's market value is driven by a combination of its rarity, condition (the grade), and current demand from other collectors
That said, every set has something in it that could belong in your binder, and what might make a particular set 'worse' for some folks is highly subjective
It's a great card in the casual format that most folks play
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