If a player or permanent has more than one kind of counter on it, and you choose for it to get additional counters, it must get one of each kind of counter it already has. You can't have it get just one kind of counter it already has and not the others.
You don't have to choose every permanent or player that has a counter—only the ones you want to add counters to. Since "any number" includes zero, you don't have to choose any permanents at all, and you don't have to choose any players at all.
You can choose any permanent that has a counter, including ones controlled by opponents. You can choose any player who has a counter, including opponents. You can't choose cards in any zone other than the battlefield, even if they have counters on them.
Last observed on Scryfall 2 months ago at $5.65. Over the trailing 90 days the price moved between $5.29 and $5.69 across 56 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 2 catalogued treatments from PIP — the lineup includes Extended Art alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #964 of *Fallout*, the set that shipped alongside the March 2024 Fallout release.
Card type: Artifact — Vehicle, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {4} (4 converted). Keyword abilities: Flying, Crew, and Proliferate.
Legal in Legacy, Vintage, and Commander.
EDHrec ranks this card #5,873 in Commander, putting it in the niche-pick tier of the format's playable pool.
Illustrated by Jarel Threat. Rarix catalogs 130 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Jarel Threat
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
Players can respond to a spell or ability whose effect includes proliferating. Once that spell or ability starts to resolve, however, and its controller chooses which permanents and players will get new counters, it's too late for anyone to respond.
Some spells and abilities that cause you to proliferate may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. You won't proliferate.
