omer, King of Rohan loves it when you have a bunch of Humans in play, as he can be absolutely massive and this is extra important because he also does damage equal to his power to any target when he enters the battlefield
The gates give you ways to control the board, namely Gates Ablaze to keep the board under wraps and Guild Summit to help tear through your deck, which is critical to help you chain Nexus of Fates
Outside of that, it's a solid inclusion in any of the Draft formats where it's available (Cube, Ikoria , and March of the Machine )
Clearly, this enchantment is made for messing up the combat, but the resolve is so complicated that at the end, you dont know what to do and how to end this nightmare
Its also a solid roleplayer in green decks that want to use Green Sun's Zenith as a turn-1 mana dork or that want a cheap creature to sacrifice to Natural Order
While Smothering Tithe can be tiring to play (with and against), you cant argue against the power of this card