Unlife

Enchantment
When Unlife Dead comes into play, if it's in play, it becomes an Aura with enchant permanent. Put target Artifact or Creature card from a graveyard into play under your control and attach Unlife to it. If the enchanted permanent is an artifact it is also a creature with power and toughness each equal to its converted mana cost.
When Unlife leaves play, destroy enchanted permanent. It can't be regenerated.
I care not if it ever lived, enough that it is deador
Life is wasted on the livingI got this idea from the new Memory Jar on legs and a few deck ideas that aim to animate the dude to get multiple Jar effects. What if you could animate dead artifacts? White might dig up Artifacts but Black prefers the unliving to dig themselves up. Artifacts would have 'summoning sickness' so any dangerous combo is unlikely.
Yes this is cheaper than Animate Artifact but you need a dead Artifact to cast this on (and Animate Artifact sucks). The Phyrexian viewpoint of no distinction between creature and machine is reflected in the ability to animate creatures or atifacts. The idea of animating Enchantments was discarded because it is out of flavour and a rules nightmare.