Many of these abilities are so powerful and/or useful that whole Commander decks are dedicated to duplicating and reusing them
Note that each regenerate activation only protects a creature once, so if your opponent has multiple removal spells for your regenerate creature, youll have to activate the ability each time
Acrobatic Maneuver Astral Drift Astral Slide Bind (playtest) Blizzard Strix Blur Brokers' Safeguard Cloudshift Conjurer's Closet Daydream Essence Flux Icy Prison Justiciar's Portal Liberate Long Road Home Mistmeadow Witch Otherworldly Journey Parting Gust Pegasus Guardian Pegasus Guardian Personify Quantum Entanglement Restoration Angel Sentinel of the Pearl Trident Siren's Ruse Skybind Skycoach Conductor Spaceshift Tawnos's Coffin Teferi's Time Twist Turn to Mist Vanish into Memory Vizier of Deferment Voyager Staff
This card is priced regularly at $3,500
For all intents and purposes, once you determine which dice count, any extra dice were never rolled
Its quite an easy trigger to satisfy with your main draw and cycling, cantrips, and looting effects