"This enemy gains 1 image token. Unless no tokens remain, before defending roll 1 blue dice. If <shield icon>: Discard 1 token and ignore the attack."
How do you guys play this, AFTER the power is used and the token is discarded? Do you 'refresh' the power at any stage (like time phase) or consider this power "one-off" and don't use it again?
We played it that it is only an one-off power but had disagreements that we undermined the power which was meant to be used more than once.
Fun fact: This power emulates a similar Dungeons & Dragons spell with the same name and behaves very similar to it. Effectively, there is a chance your Hero attacked an illusionary image and his attack did absolutely nothing. Then the illusion gets 'dispelled' and disappears.
So, you played it correctly. This power does not refresh.