Playing two animations simultaneously that both alter the same sprite image?

Hey guys, I am having a lot of trouble trying to figure out how to play two animations on the same sprite simultaneously. In the screen shot below, I have the "invincibility_frame" animation that changes the transparency of the sprite and the "witchInvicibility Base" animation, which continues to pass in the idle animation so the sprite doesnt look 'frozen'. These are both set true with the bool "isInvincible". At the moment, it seems as if the "invincibility_frame" animation is the only one that is playing. If anybody has any help or advice please let me know, it will be greatly appreciated :)