If its immediately caught, its not unreasonable to ask to redo something
Having Sakashima of a Thousand Faces enter as a copy of your other commander also makes it so that if your coin flips are good enough, you can have a copy of the spell resolve while you also have the original spell return to your hand when each of your commanders get different coin flip results
Finally, sacrifice payoffs are usually the effects holding the deck together
Update Sept
Hakbal of the Surging Soul, Cold-Eyed Selkie, Emperor Mihail II, Kumena, Tyrant of Orazca, Realmwalker, Sage of Fables, Svyelun of Sea and Sky, Topography Tracker, Seafloor Oracle, Tributary Instructor, Tatyova, Benthic Druid, Prime Speaker Zegana, Tishana, Voice of Thunder, Inspiring Call, Commit // Memory, Kindred Discovery 16 card draw