To proliferate means to choose any number of permanents and/or players that have a counter, then give each one additional counter of each kind that permanent or player already has
4 | Zurgo And Ojutai Mana Value: 2URW Rarity: Mythic Rare Type: Legendary Creature Orc Dragon Stats: 4/4 Card Text: Flying, Haste
The Disney Lorcana: Rise of the Floodborn checklist is the first expansion to Ravenburgers popular trading card game
One option is to run O'aka, Traveling Merchant, a card that can remove a counter from one of your nonland permanents
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As for the actual card, being able to copy an entire stack worth of instants and sorceries on an uncopyable spell