Sporeback Troll

Most graft creatures hand their counters to incoming bodies and call it a day. This one closes the loop: it gives away counters, then spends mana to protect whatever ended up holding them. Graft's whole premise is that the counters are mobile, drifting off the host onto fresh creatures as they enter, and the regeneration ability tracks that drift exactly. It can only shield a creature already carrying one of those counters, which is precisely what graft is busy scattering across your board. The result is a slow, repeatable insurance policy whose pool of valid targets grows as you develop. The body enters as a 0/0 that only stands up because of the counters riding it, the standard graft tension where the creature is worth nothing the moment it has finished donating. What separates this from a vanilla counter-spreader is that it stays useful after the counters have moved on: so long as one of your creatures is wearing growth, this troll can spend a little green to walk it through removal or a bad block. It rewards a board built on distributed growth rather than a single fattened threat, which is exactly the kind of board graft was meant to enable.