Summersong Druid

Defender
Whenever a player casts an instant or sorcery spell
add one mana of any color. If that mana is spent
on a creature spell, put a +1/+1 counter on
Summersong Druid. If it's spent on a
non-creature permanent, gain 1 life. If it's spent
on an instant or sorcery gain 2 life.