Counter Mover

Cards that physically move counters already on the battlefield from one permanent to another, or stash counters and redeploy them elsewhere. The Ozolith banks counters off dying creatures and shifts them onto an attacker, Nesting Grounds slides a counter between permanents, Forgotten Ancient piles up counters and distributes them at upkeep, and Bioshift transfers any number from one creature to another. Distinct from Counter Placer, which creates brand-new counters from nothing, and from Counter Doubler, which amplifies counters as they land; here the total counter count stays roughly the same while their location changes. Also separate from Proliferate, which adds an extra counter to permanents that already have one instead of relocating what's there.