mtg cards like smothering tithe Proxy Add one mana of any color Substitutes for Smothering Tithe? :

Having auras that grant indestructible will severely limit your opponents options for removing Uril, and will allow you to safely swing each turn with your commander

Command Tower All 26 cards are rares within boosters and are available in 1 in 12 Set Boosters, with 1 in every Collector Booster

FOGGY SWAMP VISIONS Need a quick infusion of enters, leaves or dies effects

The deck also features ways to draw additional cards to maintain card advantage

In a similar vein, Ruthless Technomancer can provide a ton of excellent utility by producing treasures and enabling reanimation

Existing Coded Power Levels There are a number of existing power levels within Commander beyond cEDH