Aravah, Near Perfect Hunter

Reach, deathtouch
Cat and Beast Type creature you control get
+1/+1 and have Reach and "if this creature would
take damage, prevent 1 of that damage"
For each {b} or {g} in a cost for Cat or Beast Spells
you cast, you may pay 2 life rather than pay that
mana, then put a +1/+1 counter of Aravah
for each spell cast this way