Nanami, the Calligraphic

Nanami can't be blocked by artifact creatures.
Whenever Nanami deals combat damage to a
player, put an ink counter on target noncreature
permanent that player controls.
{2}{u}{b}: Remove an ink counter from target
noncreature permanent. If you do, its controller
loses life equal to its converted mana cost, then
you gain control of it until end of turn.