Spike Breeder
The Spike was Tempest block's experiment in counters as a portable resource, and this one is the clearest statement of the idea: a creature whose entire body is fuel. The three +1/+1 counters it arrives with are not stats so much as currency, each one convertible into a counter on a friend or a fresh 1/1 Spike token at two mana a pop. That second mode is the loop that distinguishes it from the rest of the cycle. The tokens it makes are vanilla 1/1s, so the engine here relies on the breeder itself; you can pour counters into one creature, let the spent shell fall to state-based actions once its last counter is gone (its base 0/0 cannot survive the depletion), and rebuild a board of bodies that can in turn host counters later. The mana tax is what meters the whole thing: every transfer and every token costs two, so the value is real but slow, paid out a counter at a time rather than dumped all at once. What makes the card more than a green value piece is that it treats +1/+1 counters as a graph of movable nodes rather than a fixed buff, a notion the Spike subtype was built to explore and that later counter-matters designs would mine repeatedly. It does not win on rate; it wins on the fact that nothing it spends is ever truly gone while a Spike token remains to receive it.

