Envy

When Envy comes into play, gain an Envy Emblem that says "At the beginning of each of your upkeep phases, take one damage for each
sin token on this emblem. This damage cannot
be prevented or redirected."
{t}, put a sin counter on Envy Emblem: Bury target creature owned by target opponent in
your graveyard. That player buries creature owned by you in their graveyard. Change of
ownership is permanent.