Pessimistic Old Elf

When Pessimistic Old Elf enters the battlefield,
create a poison token (it is an artifact with
"{2}, {t}, Sacrifice this token: Target creature gets
-1/-1 until end of turn")
Poison you control has "{b}, {t}, Sacrifice this
permanent: you lose 1 life and draw a card".
His hart is dark and so are his drinks. Although the
venom is made drinkable, the taste is still horrendous.