Jin-woo, Shadow Monarch

•Whenever a creature under opponent control dies, put a +1/+1 counter on Jin-woo
•Whenever opponent's creature dies, you may pay
{1}, if you do, create a token copy of that creature, except it's a Shadow.
{x}{u}{b}: pay X life, Create that many 2/2 black Shadow knight creatures.
{3}{u}{b}{r}: Create Igris, a legendary 7/7 black Shadow creature with Haste and Doublestrike.