Helico, of the Avenge Hunters

Pack Tactics — Whenever Helico attacks, if you attacked with creatures with total power 6 or
greater with 4 or more creatures, create an enchantment with "Whenever Helico, of the
Avenge Hunters attacks, it gets +X/+0 where X
is the number of creatures you control divided by
2. If needed, round up."
"The leader of the pack, the best, most loyal, and protective one I've had in almost sixty years."
— Serius, Northern Dog Tamer