Shape of the Wiitigo
{3}{G}{G}{G}
Enchantment -- Aura
Enchant creature
When ~this~ enters, put six +1/+1 counters on enchanted creature.
At the beginning of your upkeep, put a +1/+1 counter on enchanted creature if it attacked or blocked since your last upkeep. Otherwise, remove a +1/+1 counter from it.
Wiitigo
{3}{G}{G}{G}
Creature -- Yeti
0/0
~this~ enters with six +1/+1 counters on it.
At the beginning of your upkeep, put a +1/+1 counter on ~this~ if it has blocked or been blocked since your last upkeep. Otherwise, remove a +1/+1 counter from it.