Khara Devoted Paladin

First Strike, Lifelink, Deathtouch, Haste
When Khara Devoted Paladin enters the battlefield, you may sacrifice a creature. If you
do, you gain 4 life and Khara Devoted Paladin
deals 2 damage to any target.
When unspent mana leaves your mana pool on
your turn, Khara Devoted Paladin deals that
much damage to any target.