Stripping away Hexproof and Indestructible not just from opposing creatures, but all opposing permanents allows you to circumvent many difficult to answer pemanents, including Theros gods like Xengaos, God of Revels, pesky protection cards like like Darksteel Plate, and shielded lands like Lotus Vale

Amy's Home Arc Blade Atraxi Warden Benalish Commander Charnel Serenade Chronomantic Escape Corpulent Corpse Crashing Footfalls Curse of the Cabal Cyclical Evolution Detritivore Dinosaurs on a Spaceship Divine Congregation Doom's Time Platform Durkwood Baloth Duskrider Peregrine Ecstatic Beauty Epochrasite Festering March Fungal Behemoth Gaea's Will Gargadon Giant Dustwasp Glimpse of Tomorrow Greater Gargadon Heroes Remembered Hypergenesis Ivory Giant Judoon Enforcers Keldon Halberdier Knight of Old Benalia Knight of Sursi Living End Lotus Bloom Mindstab Mox Tantalite Nantuko Shaman Nihilith Pardic Dragon Petrified Plating Phthisis Plunder Profane Tutor Restore Balance Resurgent Belief Rift Bolt Rift Sower Riftmarked Knight Roiling Horror Rousing Refrain Search for Tomorrow Shade of Trokair Shivan Meteor Shivan Sand-Mage Sibylline Soothsayer Sol Talisman Suspended Sentence Talon Gates The Parting of the Ways The Wedding of River Song Venture Forth Wheel of Fate

Beyer says that we can expect Lukka to find a new companion and fall in with some pretty dark folks during his time at school
Once it has all four abilities, the Ring can still tempt you and you can change Ring-bearers, but no new abilities will be gained and no old ones will be lost
The ideas came flooding in so fast that they couldnt all be contained