Aegon Targaryen, Renamed

Vigilance, Lifelink

Whenever a spell or ability an opponent controls
causes one or more creatures you control to be
dealt damage, you may have that damage dealt to
Aegon Targaryen, Renamed instead. If you do,
tap each creature that would have been dealt
damage by that spell or ability. You gain X life,
where X is the damage that was dealt to Aegon
Targaryen, Renamed this way.