Mega Man, the Blue Bomber

{c} or {w/u} or {b/r} or {g},{t}: At the beginning of your upkeep, Mega Man deals 2 damage to any target.
Whenever Mega Man destroys a legendary
creature, you may search your library for an aura
card that shares a color with the creature, exile
the aura and shuffle your library. The aura
gains the abilities of the creature. Once per turn,
you may attach an aura exiled by Mega Man to
him. Exile the aura at the end of turn.