The Elder Summit

When The Elder Summit enters the battlefield, discard your hand and you lose half your life.
{b}{b}{b}: This land becomes a 8/8 Black Dragon creature token with flying, indestructible, lifelink and trample until end of turn.
{w}{w}{w}: This land becomes a 4/4 White Dragon creature token with flying, hexproof, vigilance and double strike until end of turn.