Artifact ramp deck's biggest weakness is consistency and the strength of the Chalice is being able to fill a couple of different roles therefore greatly increasing the consistency of the deck
Not only do they survive, but with a Hardened Scales or Conclave Mentor on the board, each combat step increases their value exponentially since transferring them onto a creature adds an extra two or three depending on how many of these cards you have out
The one-spell-per-turn limitation and lack of card advantage make it significantly weaker
What WB needs most in Commander is more ways to pivot away from control and get to finishing a game
You could also opt for a combo with Breath of Fury , taking more and more combat steps as long as you can connect with opponents
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