Karna, Hero Of Charity

Indestructible, Vigilance, Lifelink
{x}, {x}, {r/w}: Deal X damage to a creature or Karna,
Hero Of Charity gets +X/+0 until end of turn.
{6}, {w}, {w}, {r}, {r}: Karna, Hero Of Charity loses Indestructible and gains +X/+0, until end turn,
where X is your life total. After the combat phase,
if you still control Karna, Hero Of Charity, or
have a life total over 60, destroy all creatures but Karna, Hero Of Charity, and destroy all lands,
take 5 damage for each land destroyed
this turn.