The first card we consider is the Seven of Wands. This card shows a stalemate where the forces are balanced, so there is still no clear indication of how the situation is developing. The presence of the card on the obverse suggests that there are chances of success, but there are also serious risks if one does not focus on the objective and proceeds with caution.

The second arcanum we consider is The Hermit. The Hermit represents the search for truth and inner wisdom, so the question is, "what is the truth behind this deal?". This card suggests that Lucas should gather all available data, carefully analyze all aspects of the possible deal, and question Federico to make sure he has all the necessary information. Furthermore, he should consider the possible consequences of his involvement with Federico and be careful in assessing the situation so that he can make an informed decision.

Finally, let's consider the Page of Wands. This card symbolizes a journey in search of new opportunities, but it can also mean unexpected or chance encounters that could lead to creative or innovative solutions. This card suggests that Lucas could benefit from this arrangement, but should be prepared for any unforeseen situations along the way.

From the three cards examined we can deduce that Lucas should be cautious and meticulous in making the decision to trust Federico with the deal in question. He should explore all options and gather all available data to make an informed decision. There are also possibilities of success, but also risks and unexpected events to take into consideration. So, the most likely answer to the question is No, Lucas shouldn't trust Federico with this deal without carefully examining him first.