Atmospheric Greenhouse

Spacecraft is an artifact type with no special meaning. It doesn’t grant the artifact any intrinsic abilities. Other cards may care about which artifacts are Spacecraft.

The abilities of a permanent with station are based on the number of charge counters it has. This means that if a permanent with station gets charge counters due to some other effect (such as proliferate) or loses charge counters somehow, its abilities change accordingly. The same is true for determining whether or not that permanent is a creature.

Each station card has one or more striations in its text box. Each striation is preceded by a station symbol—a circle surrounding a number and a plus sign.

A station card is a card with the station keyword ability. The station keyword means “Tap another untapped creature you control: Put a number of charge counters on this permanent equal to the tapped creature’s power. Activate only as a sorcery.”

Each station symbol represents an ability. A station symbol means “As long as this permanent has N or more charge counters on it, it has [abilities],” where N is the number inside the symbol and [abilities] are all the abilities found inside the same striation as that symbol.

If the tapped creature has negative power, no charge counters are put onto or removed from the permanent with station.