The Seven of Cups is a card of options, daydreaming, procrastination, while the Two of Wands indicates dilemmas, decisions and a desire for action. The common theme of the two cards is a certain difficulty in decision making. The difference between these two is that the Seven of Cups doesn't mind staying happily lost in reveries, but the Two of Wands feels restless and there's a strong urge to act, to lead, to dominate.
The elements of these cards are Water (Seven of Cups) and Fire (Two of Wands). Water doesn't like Fire to disturb its peace, even if Fire tries to motivate and awaken it. As a result, the situation here is far from friendly and the two cards fight each other. The Seven of Cups wants to stay safe in its dreamy, illusory worlds, but the Two of Wands is screaming for action. Since both cards mean that a goal is not yet determined and a choice is yet to be made, this combination could bring restlessness, mood swings and stagnation.