On the bright side, because Horn of Plenty helps everyone out, theres a decent chance your opponents will ignore it until its too late
Trading something valuable with it to prevent the trigger, or then taking the damage and sacrificing things or discarding cards makes this card worth paying attention to
This also meant that the buyer enabled the Best Offer feature, to see what itd sell for as it did go for less, we have no way of knowing the value
Then you can pay life and draw from your library in your end step only
Life from the Loam One of Magic's best green sorceries, Life from the Loam is often the best card in the decks that have it, which tells you a lot about how good it is and what kind of decks like this card
A useful trigger that costs no mana to use