As a card, it's solid, letting you flood the battlefield with copies of Assassins in exile with memory counters
There's some great cards in here that will be useful in your Rise of the Floodborn collection, particularly the Merlin and Madam Mim cards, but otherwise this is the least competitive deck you can get.
Card Set(s) 3rd Anniversary Event CARD VIEW OP09-027 | UC | CHARACTER Sabo Attribute Special Block icon 3 Type ODYSSEY/Revolutionary Army Effect [When Attacking] [Once Per Turn] If you have 3 or more rested Characters, draw 1 card
Artifact Color tag templates(None) Color tag templates(None) Sun Droplet Whenever you're dealt damage, put that many charge counters on this artifact
Aura-based Voltrons may use cards like Ethereal Armor or Ancestral Mask to acquire this power
Grimoire Thief This has a lot of potential, but attacking more than once or twice might require too much work to make it worthwhile