It doesn't matter which mode you choose or which additional costs you pay, including any additional costs imposed by other effects
Wizards responded by creating a lengthy register of rare cards from existing sets and published it with a specific promise to never reprint those cards, nor to print similar cards which would supersede them in game

Support Codsworth, Handy Helper Puresteel Paladin Ardenn, Intrepid Archaeologist Stoneforge Mystic Halvar, God of Battle Pearl-Ear, Imperial Advisor Envoy of the Ancestors Loyal Inventor Stonehewer Giant Attackers Alela, Artful Provocateur Balan, Wandering Knight Kappa Cannoneer Support/attacker hybrids Armored Skyhunter Basim Ibn Ashaq Baleful Strix Ledger Shredder Raffine, Scheming Seer Starnheim Courser Danitha Capashen, Paragon Danitha, Benalias Hope Zur the Enchanter Equippable Creatures Batterskull Cloudsteel Kirin Razorfield Ripper Nettlecyst Glyph Elemental Eidolon of Countless Battles Power Boosts Arna Kennerd, Skycaptain thrives by powering up your Creatures, turning them into high-damage, well-protected, hard-to-block threats by creating additional copies of Equipment, Auras, and +1/+1 counters
This is a much-needed effect in storm decks since you need spell redundancy and a big combo turn
Where is the expansion symbol
While their subject matter is more sci-fi or steampunk, the art is on par with the StarCityGames sleeves