Goldryn, Sword of flame

whenever a legendary creature enters the battlefield, you may pay 5 life. if you do, attach Goldryn to that creature.
Equipped creature gets +6/+2, and gains firststrike, haste, and lifelink.
If equipped creature would die, instead you may
pay 5 life and sacrifice Goldryn. if you do, return
that creature to the battlefield tapped, under its
owners control.
Equip {r}{r}{r}{r}{r}