The Ultra-Class Elder Dragon

Enchant target creature with Keoaruboru in its
name
Keoaruboru gains Rocksteady, Fear and Blazing
Peaks- When this creature attacks, you may
choose to put a Unknown Origin Counter onto
this creature, this creature gains +9/+3 for each Unknown Origin Counter and 5 +1/+1 counters
for each Unknown Origin Counter whenever this creature deals damage