Plague Priest Edicts

Under-Father provides! — Draw a card for every plague priest decreeing this when you defeat an enemy.
Kill man-things, yes-yes! — Gain a permanent card in your hand that costs 1 + X Putrid mana and destroy a creature with a size less than 5. For every extra mana and Plague Priest decreeing this, add 2 to the maximum size.
Sacrifices for Great Horned One! — When a creature you control dies, add a +1/+1 counter to a target Plague Monk.
Thirteen corpse-bodies! W