In some less common cases, the spell you may want to cast because of discover may have a different mana value than the card you exiled
Maybe in a normal deck, but if theres a way to storm off on the end step, this will be awesome
(2016-06-08) If you own Green Sun's Zenith, but an opponent casts it (due to Knowledge Pool's effect, for example), that opponent searches their library for an appropriate creature card, then shuffles that library
1 Narset, Enlightened Master Cant Stop Free Spells Narset is one of the single most powerful commanders out of the Command Zone, and it takes quite literally, no setup to have her combo off
Have any thoughts or comments