Surprisingly, I think the new cards in the deck will be the ones commanding a majority of its price tag
Toxin Sliver Market Price: $3.52 A four-mana 3/3 is far from playable in Constructed formats, but that's the beauty of Slivers
Shalai turns off the card completely, so switching up the sideboard plan is fine if they keep sideboarding Sleeps
Archaic's Agony Avacyn's Judgment Banefire Blaze Bonfire of the Damned Burn from Within Calamitous Cave-In Cataclysmic Prospecting Chain Reaction Choco-Comet Comet Storm Conflagrate Crackle with Power Crater's Claws Delete Demonfire Detonate Devastating Dreams Devil's Play Disaster Radius Disintegrate Draconic Intervention Dwarven Catapult Earthquake Electrodominance End-Blaze Epiphany Eternal Flame Fall of the Titans Fanning the Flames Fault Line Fear, Fire, Foes
To me, this seems obvious, but based on some of the conversations I've seen on Reddit and social media, a meaningful number of Magic players don't see it this way
As part of the legendary Power Nine, this zero-mana artifact provides free red mana, giving aggressive decks an explosive edge right from the start