Why Diamond Tiara. You might ask? Well, there are reasons - primarily because Diamond Tiara is a more fleshed out character. Babs spends the first half of her first episode in a shell, and the second half acting the way she thinks she ought to behave rather than how she is. She behaves, in fact, rather like Diamond Tiara.
 
The suit of Batons is ruled by the virtue Fortitude, and is associated with the element of fire. The Ace of Batons is about supremacy, family, rank, posterity, enterprise, and inheritance. Reversed it may indicate persecution, vexation, cruelty, tyranny, and ruin. Oh this will be a fun one.