096, Final Sight

Trample, Shroud, First strike, Indestructible.
Whenever 096, Final Sight deals combat damage
to a permanent, exile that permanent.
Whenever 096, Final Sight attacks it gets +X/+0
until end of turn, where X is equal to the
defending player's health.
If 096, Final Sight would leave the battlefield,
instead it phases out and comes back flipped.

SCP-096, the last thing you can ever see.