Tainted Wilds

Whenever a land enters the battlefield under your control or is put into your graveyard from play, put a +1/+1 counter on Tainted Wilds. Sacrifice a land: Choose one- -Tainted Wilds gains trample until end of turn. -Tainted Wilds gains indestructible until end of turn. -Tainted Wilds gains hexproof until end of turn. Sacrifice all lands you control: Tainted Wilds fights each other creature in play. Activate this ability only if Tainted Wilds has 15 or more +1/+1 counters on it.