Well, if you can find a way of empowering the 1/1 unblockable suitably then you vastly increase the quantity of decent one drops blue has on offer which solves the biggest issue it currently has
But even at the extreme end, print lines don't command misprint premiums
If another triggered ability during your upkeep causes you to sacrifice a creature, such as that of Lord of the Pit, you won't be able to target it with Sheoldred's triggered ability as that ability is put on the stack
if the keys are stolen and placed in the gate (as attempted by Don Zaloog), nothing will occur
Once per turn, you can destroy 1 monster with ATK or DEF equal to or higher than the ATK of this card
If you only play Magic every once in a while, you may update your decks just a few times a year like I do