GOI moon superbase

stays on the field until destroyed or discarded. when you activate this spell, pay 4 power points. once per turn, during your
start step, you may pay 3 power points and activate one of the following effects.
.you gain 3 life.
.your opponent loses 3 life.
.destroy 1 spell or 1 creature with a fight
score of 3 or less on the field.