Ezuri, acechador de las esferas
Criatura legendaria — Guerrero elfo pirexiano
3 / 3
Cuando Ezuri, acechador de las esferas entre al campo de batalla, puedes pagar

. Si lo haces, prolifera dos veces.
Siempre que proliferes, roba una carta.
You don't have to choose every permanent or player that has a counter, only the ones you want to add another counter 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.