A similar trainer class took over for Delinquents, presumably due to the negative connotation of the name
Because a card drawn toward one requirement uses up a slot that can't also fill the other, the true answer is lower than multiplying the two individual chances together
Karumonix is the perfect addition to any Rat tribal deck, whether its your commander or just a new role-player
A Stoneforge Mystic that doesn't risk turning on your opponent's Archive Trap after your search
This is also a good ability to help protect your characters from being challenged after using them on your turn, as readying them will prevent this from happening - though it wont stop them from being targeted by songs, actions or direct attack abilities
In a pinch, you can also put it on your own permanent if you really need a specific color of mana or something, but thats almost never going to be the right thing to do