"I would suggest the targetable compass, since that will enable you to find your sister easily: once that is done, you can then use it to locate useful things such as 'the nearest shadow.' A weapon that does not rely on mana would also be highly recommended, likely the casting-gun."
She taps her chin, making a light, bell-like chime.
"I confess I'm intrigued by the spear: with the compass, it would even be retrievable. For the last option, I would likely choose either 500,000 credits or a mana battery. That is, unless there was a particular option on another card that you were intrigued by?"