Vigilant Puritan

Whenever an opponent casts a non-white spell,
put a +1/+1 counter on Vigilant Puritan.
Whenever you cast a non-white spell, put a -1/-1
counter on Vigilant Puritan.
"When the heathens try to tempt me, I stare them in
the eye and say 'Nay'. The purity of the soul is the
only thing that matters in this life."
- Puritan Chadwick, three days before being caught in
the Midnight Chambers.