The reasons for using the artifact base are to increase your odds of making a turn one play infect creature and to be able to abuse things like Cranial Plating and Arcbound Ravager for killing blows out of nowhere
Significant cards on the list: The Power 9 The Original Dual Lands The Ante Cards Blaze of Glory Braingeyser Chaos Orb Contract from Below Copy Artifact Cyclopean Tomb Fastbond Forcefield Fork Gauntlet of Might Illusionary Mask Lich Natural Selection Raging River Time Vault Two-Headed Giant of Foriys Vesuvan Doppelganger Wheel of Fortune Word of Command Most of these cards are already quite pricy thanks to power level, nostalgia, or both
Look no further than Zendikar Rising for some lovely upgrades such as Glasspool Mimic, Nighthawk Scavenger, Thieving Skydiver and Zareth San, the Trickster
This demon can easily get you an insane 3 combat steps per turn on a 6/6 body with flying and trample for 6 mana
Well now, thanks to Tarkir: Dragonstorm , there is
I thought we were talking about Punishing Fire