The Bonewhite Towers

(The Bonewhite Towers is not a spell)
{t}: add {1} to your mana pool for each land you control named The Bonewhite Towers
Sacrifice The Bonewhite Towers: Counter target
spell or ability
When The Bonewhite Towers enters your
graveyard from anywhere, each opponent loses 4
life and sacrifices a creature