Damned Gunslinger

{p/w} Damned Gunslinger gains first Strike until the
end of the turn
{p/r} Damned Gunslinger gains trample until the
end of the turn
{t} Sacrifice a creature of equal or greater mana
cost to Damned Gunslinger. Damned Gunslinger
gains +2/+2 and Lifelink.