Saurian Symbiote

The choose-one on this Fungus Dinosaur compresses the whole design language of green build-around midrange into one enters-the-battlefield trigger. Either the body gets bigger (a +1/+1 counter turning it into a 3/4 with reach) or the board gets wider (a lone Saproling to chump, sacrifice, or convoke away). Neither line is exciting on its own, which is exactly the point: this is a common-tier value creature built to give a synergy deck a small, reliable choice each time it lands. The counter mode feeds anything that cares about +1/+1 counters or proliferate; the Saproling mode feeds fungus-and-token strategies, sacrifice fodder, and go-wide payoffs. Its dual creature typing (Fungus and Dinosaur) is a deliberate hook, letting it slot into two separate tribal shells without either being the primary sell. Reach on a four-mana ground creature gives it a modest defensive floor, so it still contributes to a stalled board rather than sitting idle. Nothing here reaches beyond its rarity, and it isn't meant to: this is the kind of flexible, low-variance green common that fills out a counters or Saproling archetype without demanding the deck be built around it.