Read rules for Vigor
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.
6/6
more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.
