Battle Scared Castle

Battle Scared Castle enters tapped
{t}: gain {w} or {b} mana
Every time a non-token creature dies put a counter
on Battle Scared Castle
{t}: During your opponents attack phase you may sacrifice Battle Scared Castle, put X 2/2 White, Black zombie tokens on the battlefield, X being the the numbers of counters on this card. exile all tokens
made this way at the end of your next end step.