The Lunar Abyss

Enchant target creature with Ceadeus in its
name
Ceadeus gains Moonquake- Whenever this
creature takes damage from any source put a
Luminous counter onto this creature, this
creature gains +2/+2 for each Luminous counter. Whenever this creature deals damage, add {u}{u} to your mana pool and {u}{u}{u} if a player
was damaged