Mostly skippable
Cumulative upkeep says, "Hey, pay 2." Echo says, "I'm good." And fading says, "Take off another fading counter
I need to work on that
New Capenna Commander Collector Number: 27 Card Type: Enchantment Aura Mana Cost: Oracle Text: Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Enchant creature, planeswalker, or Clue Enchanted permanent is a colorless Clue artifact with ", Sacrifice this artifact: Draw a card" and loses all other abilities
(There is psychological value to countering an opposing spell with a Force Spike since they are so easy to play around, yet it's not worth playing around them in Commander because they aren't heavily played, which makes getting your powerful spell hit by Jwari Disruption especially devastating.) As for the rest of the bunch, Silundi Vision is listed as an often play just because you need to be a reasonably spell-heavy deck for it to work
You attach an Energy or two, the starter gets knocked around by some low damage, then boom: you move that Energy and damage to the likes of a Reshiram or Zekrom