Authority of the Consuls gains us life while also tapping down our opponents board
The key part of that is that it says play, not just cast, which means that you can play Lands if theyre there
There's still lifegain stuff like Voice of the Blessed, five color things like The Kami War // O-Kagachi Made Manifest and all the domain cards from Dominaria United , heroic or aura type things with cards like Stormchaser Drake and Light-Paws, Emperor's Voice, good build around planeswalkers like Chandra, Dressed to Kill, fun graveyard stuff like Deathbonnet Sprout // Deathbonnet Hulk and Urborg Lhurgoyf, and big five color human stuff like Jodah, the Uniifer, as well as a bunch more
Too good: The MTG Commander banlist Able to play any type of mana your deck needs, almost by definition, there's pretty much no reason not to pop a Command Tower in every Commander deck you ever build