The Earth Crystal

Most counter doublers are a single line of text with a single job; this one stacks three distinct payoffs into one object and asks you to earn each of them separately. The cost reduction on green spells is the least flashy and the most quietly foundational: it lets the rest of your green engine deploy faster, which matters when the second ability wants a wide board to work on. That second ability is the reason the card exists. Doubling every +1/+1 counter you put on a creature turns modest counter sources into windfalls: a lone counter becomes two, a Hardened Scales-style incremental strategy compounds into something the opponent cannot race. The activated ability then closes the loop by generating counters itself, and because the doubler is passive and always-on once it resolves, distributing two counters among your creatures actually places four. The tension is in the sequencing. That distribution costs a heavy and a tap, so it competes for mana with the green spells the reduction is meant to accelerate. This wants a shell already leaning on counters rather than a card that manufactures the theme on its own, and the three abilities point at the same axis from different angles: get counters onto creatures, then make each one count double.