Fear and Remorse

All Creatures lose Deathtouch and cannot gain Deathtouch.
All Creatures gain Lifelink.
All Creatures have: "{3}: Regenerate this Creature"
All Creatures feel Sympathy.
{p/g}{p/w}: Target player thinks about all the lives
they've taken. Then, ask them if it was worth the satisfaction.
{p/b}{p/g}: Mourn for a creature in a graveyard.
How could anyone do this.