Mariposa Military Base

Any effects (such as proliferate) that interact with counters a player gets, has, or loses can interact with rad counters.

Rad counters don’t go away as steps, phases, or turns end. They only go away when an effect instructs a player to remove rad counters from themselves.

If a player has fewer cards remaining in their library than the number of rad counters they have when the triggered ability resolves, they’ll mill as many cards as they can.