Advent of the Eld Blades

When this card is discarded, if its cost is 4, add an Advent of the Eld Blades to your hand and set its cost to 2.

Select an allied follower on the field and give it +2/+2.

Oh, it was just awful looking at that body. The face had been squashed flat and all mixed up in the dirt. What kind of weapon could crush a person's head like that? They say it was a wild beast from the next village over, but I'm not so sure.