Magic Contemplation

Whenever you or your opponent cast a spell gain {x} amount of life where {x} is the converted mana cost of the cast spell.
"Do you ever kind of think about how weird life
is, like wow, how strange it is that we're alive
right now. It's so cool and it makes no sense
and then you stare at your hands and laugh
because, wtf hands! " - Skip Weasel