Tower of Roaring Shadows

Phases out of play every 3 turns.
Protection from White.
Every 5 turns, starting the turn it's played,
Tower of Roaring Shadows applies 0/-2
counters to all creatures in play. These
counters remain for an additional turn after
they are placed and are then removed.
"Mr. Mayor, we tried to demolish it,
but it simply wasn't there!"