Kenneth, Mad Warlock

Hexproof
Whenever a creature you control deals damage to
a player, if you haven't sacrificed a creature this
turn, you may sacrifice that creature. If you do,
that player loses 1 life, discards a card, sacrifices a
creature, then sacrifices a land.
"They took my home, my job, my possessions, my
family, drove me into this squalid land. But I shall
return to the city. I shall show them all."