Thusius, the Martyr

Thusius, the Martyr is a Legendary creature.
Thusius, the Martyr's toughness is equal to your devotion to red.
{t}{r}: Add a -1/-1 counter to Thusius, the Martyr.
All other non-token creatures you control gain +1/+1 for each -1/-1 counter on Thusius, the Martyr.