Zumelon, the Stormcast

Equipped creature gets +2/+2.

When equipped creature attacks, create a white
enchantment Aura token called 'Stormcast Boon'
with 'Enchant creature' and 'Enchanted creature
gets +2/+2'. Attach that Aura token to a non-token
attacking creature you control.

Equip {2}{w}{w}