Whenever Kain deals combat damage to a player, that player gains control of Kain, but you get to draw cards
It can kill stuff that a normal Kill Tap can't because you can use stuff like Liliana, the Last Hope's -2/-1 to kill off something with indestructible
But once you start looking at various cards in conjunction, you start to see confusion, where the game isn't quite sure what color a certain effect is
The artwork by Bayard Wu brings to life the literal devastation this card can bring to the battlefield when your opponents least expect it
Geralf's Messenger and Hancock, Ghoulish Mayor have extra text beyond undying, but even Butcher Ghoul will do if undying loops are your primary gameplan
As a Holofoil card, Chi-Yu has a beautiful shiny finish, making it particularly desirable among collectors