Any creature the player controls that couldnt be targeted by the original spell (due to shroud, protection abilities, targeting restrictions, or any other reason) is just ignored by Mirrorwing Dragons ability
In recent years, it has shown its age, with players well wise to the lures of the green mage
I will note that the borderless clan cards didnt really impress me
Blue loots and rummages, there are lots of blue cantrips, but beyond that a lot of blue draw just draws
Cards like Twinflame Travelers and Flamebraider reward you for staying in elementals by doubling triggers or fixing mana specifically for the creature type, while Eclipsed Flamekin helps smooth draws and keep your hand full
Then the Black uncommon Heartless Act can destroy a dork with no counter