Lord Pumpkinton and Horseface

Boundless (When this creature dies, return it from the graveyard to the battlefield as an enchantment with
the following effects under your control.)
{3}{b}{b}: Each player exiles all creature cards from
their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way
onto the battlefield. This creature gains haunt,
menace, trample, and wither if there are more
than 7 cards in all graveyards.