So, we already have a couple of cards and one seems quite impressive, IMO:
Wurmcoil engine
6
Artifact creature - wurm
Deathtouch, Lifelink
When Wurmcoil Engine is put into a graveyard from the battlefield, put a 3/3 colorless Wurm artifact creature token with deathtouch and a 3/3 colorless Wurm artifact creature token with lifelink onto the battlefield.
6/6
Highly playable, mythic rarity, probably means highly expensive... =/
I like the design behind this one.