Swain the Executioner

Swain the Executioner gets +1/+0 for
each creature in each graveyard.
If there are more than 10 creatures in graveyards
this creature also gains first strike and lifelink.
At the beginning of your endstep, if a creature has judgement counters
greater than or equal to its converted mana cost,
Swain the Executioner deals damage equal to its
power to that creature.