Spike Soldier

The Spike subtype was Stronghold's experiment in counters-as-currency: a creature that arrives as a battery of three +1/+1 counters and then spends them, either relocating them onto any creature or burning them for a one-shot combat boost. Every counter you spend is a counter the body loses, so the printed engine is a slow drain from a fixed pool of three, with no replacements coming. Send those counters out across your board and the Soldier dwindles to a 0/0 and dies; pump it instead and you get a temporary beater that shrinks every time it swings big. That trade is the whole point of the subtype, and this one is the aggressive cut of the cycle: the +2/+2 ability lets it cash its own counters into a sudden attacker rather than a permanent investment in another creature. What gives the design legs beyond its own combat math is the relocation ability, a repeatable way to move counters at a cost. Anything that cares about creatures with +1/+1 counters, or anything that loops counters back on, turns the Soldier from a wasting asset into a distribution node. The Spikes were an early statement that counters could be a resource you allocate rather than a fixed buff stapled to a body, a concept Magic has returned to many times since.