Promo Cards There are special cards you can find called promo cards, which cannot be purchased or found in booster packs
I tend to frown upon commanders whose only ability is an enter-the-battlefield trigger, because, unless youre in a dedicated blink deck, that triggers just not going to happen often enough for value
Waterlogged Teachings and Stump Stomp will be useful in every deck theyre eligible for, and while Strength of the Harvest appears to only be relevant for specific archetypes, be honest: when was the last time you saw a Selesnya deck that wasnt about spamming the board with either creatures or enchantments
Looting, which draws first and then discards, is generally better because you have more information to inform the discard decision
You could also run this in either Aura-matters or enchantment-matters brews, the 12th and 14th biggest archetypes
but out-loud laughs are few