At the beginning of the end step, if no creatures are on the battlefield, sacrifice this enchantment.
: This enchantment deals 1 damage to each creature and each player.
Trample
If damage would be dealt to another creature you control, prevent that damage. Put a +1/+1 counter on that creature for each 1 damage prevented this way.
When Vigor is put into a graveyard from anywhere, shuffle it into its owner's library.
: This enchantment deals 1 damage to each creature and each player.
