To start, we have a couple artifacts that mesh well with flicker / blink effects: Prophetic Prism is all over the place in Pauper, and for good reason
Finally, because there has been some confusion over this, I want to clearly state what isn't a feature: the difficulty
That boast ability opens the door to powerful synergies, like removing the second lore counter from Elspeth Conquers Death over and over so your opponents are permanently taxed an additional on noncreature spells, or forcing Showdown of the Skalds to pump out counters turn after turn
The 5-Mana cost to proc this massive stat buff can be hard to secure unless players get to ramp their Lands quickly
Island Amulet: Sun & Moon - Cosmic Eclipse, Lt
When buying high-value vintage ($500+), strongly consider only purchasing PSA/CGC graded copies