We've once again completed the leveling rewards sticky. This is the only thread of its kind out in the Hearthstone world! Thank you to the 72 people who have made this thread possible in one way or another.
So pretty much you need to Level up to have those cards unless u are lucky to receive them through booster packs? Or those cards are only receivable through leveling since they look class specific cards?
The level 20 warrior is also Heroic strike If you needed some proof.
@zagnaphein you cant unlock any of these cards in boosters, they are basic cards and will unlock through leveling. All the standard cards by level ten then you will start unlocking the golden versions.
If I remember correctly level 10 druid is Ironbark protector, but I am not 100%, same thing with sprint pretty sure it is level 10. I think shield block was the warrior level 10 too but really these are just from memory and it might not be right. Flamestrike may have been mage 10
EDIT: If it follows the trend of the other decks, then level 24 should be a Gold Hand of Protection as well. I just checked my library and I have 2 copies of the gold one (pretty sure I didn't crack any of those open).