IG-88 Droid Assassin

Hexproof
When IG-88 Droid Assassin enters the battlefeild, select an opponent
Whenever IG-88 Droid Assassin attacks target opponent that player sacrafices a creature with
power two or less if possible.
When target opponent has 4 or more creatures
with power two or less in their graveyard, IG-88
gains skulk and that player gets an emblem with,
whenever droid creature targets me, that creature
gets a +1/+0 counter.