Decks like Mono-Green Tron in Modern might be the most interested in Devourer of Destiny, as it helps find potential threats, Expedition Map, or missing Tron lands on Turn 1
If a player is getting too far ahead and controls Xantcha, other players can scheme to use their mana to knock the leader down a few notches
The floodgate ability is probably for the best though, since Spawn is a sizable threat on board and turns into up to ten mana's worth of spells on the way out
Sure, you might not view your wreath as a symbol of life rising from death, but the symbolism of the evergreen wreath is meant to represent eternal life and, for Christians, an invitation for Jesus into the home its hung upon
This can lead to some sneaky early wins, particularly when paired with poison effects and the like
Korvold therefore acts both as a value engine and a valid plan B should the commander be removed one time too many