Yodin is definitely my favourite card to rent too. A level 1 Yodin has helped carry my Bronze alt up into Gold 3 (via Xbot), even under levelled it still gets wins. I'm seriously considering renting a more appropriately levelled Yodin and a team to back him up next season.
I have a feeling we will see the cost of our Yodin rentals increase soon
Yodin lv 1 is enough to fight in almost all Bronze fights (except for the recent changes)