Lorya, Lucardia's Reborn

Flying, vigilance, lifelink
{t}: Mill the top X cards of your library where X
is the amount of life you gained this turn. You
may have Lorya, Lucardia's Reborn become a
copy of a creature milled this way.
{t}: Exile a creature from your graveyard. Lose
life equal to its converted mana cost. Return
Lorya from the graveyard to the battlefield. You
may have it return to the battlefield as a
copy of exiled creature