Cephalid Coliseum

{t}: Add {u} to your mana pool. Cephalid
Coliseum deals 1 damage to you.
Threshold — {u}, {t}, Sacrifice Cephalid
Coliseum: Target player draws 3 cards, then
discards 3 cards. (Activate this ability only if 7
or more cards are in your graveyard.)
Only poetry or madness could do justice to the
noises from within.