Generically good Simic commanders (or any color combination, really) are the opposite of whats healthy for the format
Why does it trigger whenever a land enters the battlefield instead of whenever you play a land
Many highlight how its synergies feel rewarding, turning a lighthearted theme into a competitive option
(Look at the top three cards of your library, then put any number of them on the bottom and the rest on top in any order.) Number 41 Language English Legal Formats Commander, Legacy, Modern, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pauper, Pioneer, Standard, Timeless
Certainly there will be some games where Whale can't close yet Aetherling would have done however I think those will be significantly less common than the number of games that Whale stops you dying in which Aetherling would have been no help at all