Spirit of the Dragon

Enchant creature.
Enchanted creature gains +1/+1 per:
•attacker while attacking. •blocker while blocking.
And it came to pass that the people of Limhi began to
drive the Lamanites before them; yet they were not
half so numerous as the Lamanites. But they fought
for their lives, and for their wives, and for their
children; therefore they exerted themselves and like
dragons did they fight.
- Mosiah 20:11