Lim Dul's Vault 10 This is probably the actual best tutor for these kinds of archetype
My turn 5: use lotus petal, 8/8 Warden (Opponent at X-8 life) Opponent turn 6: 8/8 warden (Opponent at X life) My turn 6: 13/13 warden (Opponent at X-13 life) Opponent turn 7: 13/13 warden (Opponent at X life) My turn 7: 18/18 warden (Opponent at X-18 life) Opponent turn 8: 18/18 warden, and activate elixir (Opponent at X+5 life) Alright, cool, so at the end of my opponents 5, if I save my Lotus Petal, my opponent needs to be at 19 life or higher
5 Glasspool Mimic / Glasspool Shore Glasspool Mimic is a great example of a Modal Double-Faced Card worth running in Commander
Nothing is changing regarding color identity, so if you choose a colorless Vehicle or Spacecraft as your commander, you'll still need to build your deck accordingly, but you now have some more hardware as deck-building options
Additionally, there's no real reason to play this card when Three Steps Ahead is already so powerful, and only sees a max of one or two copies in current Azorius Control lists