Each card in the Power Nine has a unique ability that can drastically alter the course of a game, whether its through massive mana acceleration, card draw, or taking extra turns
Forever Young
Tell them you're running a "Rabid Wombat Tribal Deck"
Generally speaking, in decks that are three or more colors, you want to play almost all dual lands, along with enough basic lands to support whatever ramp is in your deck (Land Tax, Kodama's Reach, Rampant Growth, et al.)
The second ability of Cid, Timeless Artificer also lets you ignore the "singleton" rule in formats like Commander
Extended art foil: $42 to $45 Extended non-foil: $23 to $25 Prerelease foil $23 Foil version: $17 to $18 Regular version: $15 to $17 Urza, Lord Protector Urza, Lord Protector is a strong card on its own in Commander and will have an impact on BRO Limited and Standard