Areaza, Soul of Zyralyn

Whenever an enchantment enters the battlefield you control, put a +1/+2 counter on Areaza
When Areaza attacks, you may sacrifice an enchantment, if you do, choose one of the following:
•Exile target creature with power or toughness 3 or less
•Areaza gains flying and vigilance
•Deal damage to target creature or player equal to one-thirds of the enchantments you control
When Areaza enters or leaves the battlefield, return target enchantment in your graveyard to your battlefield