CHALDEAS

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.)
If you would be dealt damage that would cause you to lose the game, you may remove a charge counter from CHALDEAS. If you do, your life total becomes 1 instead.
Remove five charge counters from CHALDEAS: Take an extra turn after this one. Activate this ability only if it's not an extra turn.