The fact the familiar even lets you return it to your hand to then play the adventure makes it even more exciting, meaning you dont have to worry about whether to cast it or hold it for later
However, there are two things going on here that that really change things
This is a hugely impactful spell that is often not respected enough in Constructed formats
Plus, a very high perk for GW decks, Polukranos Reborn gives you quick recovery from board wipes
I piloted a blue-white deck built with **Twiddles**, **Counterspells**, **Tundras**, and **Serra Angels**

Section 30 Summary Input: One playing of Southern Paladin Output: Lots of reuse of Spinal Villain Layer count: For each Bloodbond March, for each Clash of Realities on a new Mimic Vat, for each Guilty Conscience on Mimic Vat, for each Rite of Passage putting counters on Mimic Vat, for each Doubling Season on the Rite of Passage counters added to Mimic Vat, for each Rings of Brighthearth on Sinking Feeling's ability while it's attached to Mimic Vat, for each Rings of Brighthearth on Mimic Vat's ability, for each Clash of Realities on Southern Paladin, for each Guilty Conscience on Southern Paladin, for each Rite of Passage putting counters on Southern Paladin, for each Doubling Season on the Rite of Passage counters added to Southern Paladin, for each Rings of Brighthearth on Sinking Feeling's ability while it's attached to Southern Paladin, for each Rings of Brighthearth on Southern Paladin's ability, for each Grip of Chaos, for each Psychic Battle...15